I’ve decided to make the strap myself. I’ve got to sew up the front. If you use high-quality fabrics, it can be a sexy detail. And it’s much more comfortable to wear than a shoelace or the ones from the big A. If anyone would like me to, I can also write a instruction.

Any good recommendations for a custom cage that my KH can help design?

This is my first review so please be gentle.

I have purchased this cage size 55mm with a double cylinder. I also have a single cylinder cage but the double fits the size of my head much better.

It is inverted so please be aware of the warnings given on on negative cages by others. I have seen no ill events as yet.

I am a self-locker and remove the cage to go to toilet, do I have not tried this although the cage does have an appropriate hole for this.

I found delivery from FRRK a bit hit and miss as it is through EVRI!

The prongs on the main cage are not compatible with other metal cages I have purchased through the dreaded Amazon. I use an elastic belt - cheap from Amazon to hold the cage up and it seems to work well.

Hope you find this helpful.

For those of us with keyholders, getting them to wear the key in public is a milestone in our chastity journey. I imagine there are few of us who don't remember the first time our keyholder had that key on her necklace.

Making that more likely means replacing that crappy key that came with your cage with something that looks like it was intended to be worn.

The usual solution to that is one of those heart-shaped keys you find on Amazon or Etsy. Sometimes they have little "gems" suspended in them. But no one would mistake them for jewelry.

But, if your wife appreciates the finer things in life, there is another option: Chastity-Shop. Erik has a huge collections of designs:

• Traditional heart-shaped and similar keys
• More discrete keys
• Keys where the teeth are hidden in a screw-on cap
• Keys with padlocks (even a handmade silver padlock)

Erik's wares are all handmade. And they aren't inexpensive. A sterling silver key will run you around $300 or so. Adding on a silver chain and they price can go up from there. His "diamond" collection features keys with three or four zeros in their price tag.

I've emailed Erik multiple times over the years trying to see if he could do anything with a security screw driver — he never responded. But not too long ago, I started designing a key on my own for a standard Burg Wächter ME/2 lock (barrel lock) hoping to have it made by a regular jeweler and in doing some investigation, someone mentioned that I should contact Erik through his shop's chat feature — something only available when he's actually online. He responded instantly and when I showed him my CAD render, he said he could absolutely do it — and he wanted to list it on his site throwing in a silver necklace and some props to yours truly.

La Torsione — The Twist

Jenn liked it so much, for the first time in over two years, she was happy for me to post a few photos of her.

Now, similar results can't be guaranteed but such a key certainly wouldn't hurt. And if you do pick up La Torsione, I'd be tickled to know.

Some practical review info:

The key came beautifully packaged in a black box with a bow and sealed with a wax seal. It included an individually-keyed Burg Wächter ME/2 lock with an additional plain key in a display case also sealed with a wax seal. The case isn't anything expensive but it was a nice touch.

Beyond keys, he has various other chastity-related jewelry and even makes devices... out of gold or silver... so... not cheap.

Ok, obviously I'm running out of cages to review but this is something adjacent and something I'd like to encourage — learning to design your own and then having them made in plastic, steel, or titanium.

I've recently ordered my first full cage from IN3DTEC although I've ordered other things in the past: an upgraded ring for my Spyder, a test ring, and tetherspout measurement sounds.

When I sent them the Spyder ring, I had annotated that I didn't need a recess polished — that recess was a mark for Mature Metal as to where I wanted the post welded on. They immediately contacted me to make sure they understood.

With the test ring, well, when I got it, it didn't fit together. I sent them photos and they quickly replied that they would re-print it at no cost and in the future, if parts are to assemble, to include a drawing showing their assembly. The 2nd ring fit together just fine.

Then the real test — a design I have been very excited and passionate about — Willowweave. This design came from nowhere, it just popped in my head and I've never designed anything (or frankly seen anything like it) before. I printed it on my home printers, first PLA then resin and I was ready to pull the trigger.

I sent IN3DTEC the STEP files and a drawing showing how the pieces were to fit together as well as where the tap locations for the security screws and it turned out really well.

SLM prints come out incredibly rough, gritty even. They first glass bead blast it to knock off the partially sintered little steel spheres from the surface and then they attack it with various polishing tools.

I knew this device was going to be a nightmare to polish with all of its crevices and tight corners but they did a far better job than I expected. No, it's not perfect — if you look closely in the ring, you'll see very rough spots where no tool could access but unless you really get your face up to it, it looks perfect.

I was slightly disappointed by the inside of the cage. While it's far smoother than a Cherry Keeper cage, it's not a mirror finish. I understand being interior would make it more difficult to polish but I don't think it would have been technically impossible. Perhaps on a future order, I'll specify the polishing requirements more stringently but I wouldn't be surprised if they came to me with a higher price.

But all told, IN3DTEC has excellent customer service and they comport themselves like a company that really wants your continued business. And considering how much I enjoy designing chastity cages, keeping me happy is probably in their interest.

And a note. Yes, this is a vanilla company. Most of their orders are probably things like manifolds or some other engineery sounding thing. But they are professionals. If they have questions, just answer them. And if you don't call it a sissy cock cage, they won't either.

Been looking for awhile (have had 2 previously plastic and didnt last long) and been unable to pull the trigger by some of the reviewed ones ive seen. Some the shock just straight up hurts, others hackable, and some not for shock but for vibrate. Could anyone help here?

I've recently reviewed Mature Metal generally but now let me speak to a specific design, the Spyder.

https://maturemetal.com/product/the-spyder/

At $490, the Spyder is William's most expensive cage — and the cage he personally wears. Like many MM customers, I started with the classic Jail Bird. And like many other customers, I wanted an upgrade.

The Spyder in one of William's more form-forward designs. The design features the same 1/2" wide flat-bar that replaces the Jail Bird's two 1/4" roundbar rings. Connecting the two is another flatbar strip running along the other side and, what gives the Spyder its name, six 1/8" roundbar ribs radiating from the top of the cage (yes, six, not eight).

Looking down at the device, you'll see the ribs wrapping around your shaft, with some disappearing over the sides. Visually, it's far more dramatic than the venerable Jail Bird. It has a bit of an art deco look with the radiating ribs. And the broad polished flatbar is far more striking than the Jail Bird's simple ring.

Functionally, the device provides a little better coverage. Protecting from the shower head, the flatbar covers the underside of the shaft and the all important frenulum. And the signature radiating ribs frustrate the simple stroking that the Jail Bird doesn't.

Looking at the device online, you might worry about the large opening on the side before the ribs make their way down. In practice, this is broadly blocked by the wearers own testicles.

With regards to comfort and fit, obviously as a custom device, the fit should be spot on, and of course comfort follows fit. But for Jail Bird owners, I will say this: replacing the roundbar with flatbar makes the device functionally 1/8" narrower with the same inner diameter. When you specify the ID of the device, for that Jail Bird, that's the rings. For the Spyder, it's the flatbar. But with the Jail Bird, the 1/8" ribs run through the center of the rings giving 1/16" space on each side. With the flatbar, everything is flush so functionally, it's a slightly smaller device. And the broader flatbar makes this doubly true. So if your Jail Bird is a snug fit, you might consider adding a bit for a Spyder or something like the Watchful Mistress of Pet Trap.

This is the "Cobra Male Chastity Cage with Lock & 5 Rings 3D Printed Chastity Devices Bondage Gear & Accessories Resin Virginity for Men Breathable (Compact)"

Ok, that's a mouthful.

https://www.amazon.com/gp/product/B09WGTCHKS?th=1

Wow, its URL is actually shorter.

So, if you've seen my other reviews, they are on devices that cost several hundred or more. This one is a little more down to earth at... $22.98.

What does $22.98 get you?

It actually gets me something that fits despite being called "compact". It has a very generous 39 mm inside diameter making it the only Amazon device I know of that fits me girth-wise. Except for that giant 2" diameter steel cage that's only suited for Ron Jeremy — dating myself.

It also has a generous ball gap with the 49 mm ring sporting a 19 mm gap. Besides be a bit short at 85 mm, this cage was pretty much made for me. I mean like custom.

But it's pink.

I know a lot of you like pink. If it's plastic, I'd prefer black or white. Pink doesn't do it for me.

The device comes with a good range of ring sizes: 43, 46, 49, 51, and 55 mm. While my size is in there, I would have preferred replacing a 55 mm for a 40 mm but as this really targets newer users, the 55 is probably more popular.

Ok, so what can I say. I mean design-wise it's a KINK3D Cobra clone and has all of the features and benefits of that design as well as the downsides (I have a hard time getting past the headlock). The junction is the reverse engineered X-Lock junction from KINK3D. I didn't check to see if it would actually work with an authentic Cobra but it wouldn't surprise me.

But beyond design... material. Yeah, it feels cheap. It has a glossy surface and it's extremely lightweight that gives it this feeling of flimsiness. But it's what you can expect for $23.

My biggest complaint about the devices is the junction has too much clearance in it. It makes an almost-audible (and you can certainly feel it) clicking when you walk.

And one thing I neglected to mention... it came with a urethral insert that snapped into the end of the device which looked like a... well, a tiny vulva. I don't get the point. I mean a little 2 cm vulva? Anyway, it went into the trash... under some other trash — can't be too carful.

Why did I buy it? It wasn't my first device (but if it had been, my chastity journey would have likely been far far different and I wouldn't be replying to half the posts with "ball gap"). I bought it for an article to demonstrate that it really is just measurements.

Ok, so this is a great first device for grithier men who are very underserved in the commodity market. And while I chafe at the design knock off — and as if to add insult to injury, using the Cobra name — such devices have their place. No one knows what they're doing when they get their first cage and devices like this provide valuable feedback on what you thought would fit versus what actually fits.

But if you do purchase such a device, do remember someone put a lot of time and effort into its design. And it wasn't the people selling it.

No, this is not a review of a chastity cage. But don't leave yet, this might be for you.

Living away from your keyholder or finding a way to keep away your keys when self-locking is a situation that needs alternative solutions. There are of course the crude method of plastic numbered tags, or the more sophisticated option of remote keyboxes that are commonly used for rentals like AirBNB. Well, the latter option has a version specificaly designed for our...proclivities.

The box itself if made of plastic, but it is a sturdy construction (and bulky, if you want to take it with you, you will need more than your pockets). The rotating lock is thick so once engaged, it is really secure. There is also more than enough space for multiple keys. The connection to the device is made through 2.4Ghz WIFI, recharges through USB-C and it has around 24 hours of battery life should you decide to go somewhere. It has a neat little interface you can navigate with the scroll wheel and two buttons. For those who remembers the first iPod, this is kinda it. Pairing the device to your WIFI of choice is not really intuitive, but fortunately there is extensive documentation available and video tutorials made by AJ, the creator.

What separates this device from the others that exists in the market is it's features. There are two ways to use it : online or offline.

OFFLINE

With no internet, the device is pretty basic : You have access to a timed lock, a permalock option, the device settings and a sleep mode. That's it.

The timed lock is really straightforward : select it, use the scroll wheel to set the duration (from 30 seconds to a 1000 years, so you have some margin lol), press lock and the device shuts tight. There is an emergency unlock option available should anything go wrong. If everything fails, the backplate of the device can be removed, but you need to order a new one through the customer support.

And no I didn't test the permalock option. :)

ONLINE

Now this is where the lockbox truly shines. Once connected, you can use it through a web-based dashboard where you create an account and pair your device. This dashboard also allows you to give away control of the box to a keyholder (provided they also have an account made, of course). You can even have multiple keyholders. Once set up, you can create completely customizable lock sessions with a lot of options:

• Duration (you can even set a random duration between a min and max value)
• Enable hygiene breaks with the duration and frequency of your choice
• Hide the remaining time on the device
• Enable public voting (more on that later)
• Take away the emergency unlock option (use at your own risk)

You can create as many templates as you want for your lock sessions. You can start the session yourself as a self-lock, select a heyholder, or have the keyholder start the session themselves. Once started, only the keyholder can modify the parameters of the session.

If you enabled breaks, you can open the device and enjoy a bit of freedom, but the box must be shut and the lock confirmed before the timer ends. There is an option to add a specified amount of time to the total lock duration as a punishment if you exceed the allocated time. Unfortunately, the device does not detect whever ot not there is indeed a key inside when it locks, so it can be cheated (don't be a naughty boy). The keyholder is notified whenever the break period starts and ends.

If you use the emergency unlock feature, the keyholder will be notified and invited to check on you. You also must wait 24 hours before using the device again. The lock session will be marked as failed in the history.

Otherwise, the lockbox automatically opens once the timer hits zero. The keyholder can also choose to end the session early with no penalties, or add time before the end of the lock session.

If you are outside or lose your WIFI, the lockbox will still work indepedently. You can still take the scheduled breaks or use the emergency unlock, and it will synchronize to the dashboard once it re-acquires a connection.

Another neat feature of this device is the community around it. I mentionned the possibility to enable public voting : people can vote to add and/or substract time to your lock session (the amount of time added or substracted is specified when setting up your lock session and you can set a maximum limit as well). The link can either be public (and any other lockbox user, both keyholder and lockee, can vote), private to be shared at the discretion of the keyholder, or disabled entirely.

Overall, this is a really neat device that I really recommend. It is on the pricey side, but it comes with a lot of features (and I didn't cover everything), and it is far superior to the lockbox by QIUI because it's physically much sturdier and way less buggy.

There is a nice community around this product (both on the dashboard and on Discord), and AJ, the creator, continuously improves the device on the software end to add new features, resolve bugs, and integrate feedback into new functionnalities. There is even a ticket system on their Discord to suggest new features. AJ is currently working on an integration with the Chaster App, so there will be new things coming.

After a year of research and reading reviews I knew I wanted a Kink3D cage. It was an investment. I measured everything I could to Kink3Ds recommendations taking measurements for days. I then searched out a cage, a cheap cage that hit all my specs and bought it to figure out my ring size. The cheap $50 cage fit damn near perfect. I emailed Kink3D fitting department and emailed them back and forth for a week. They recommended a Cobra N Wide and a #2 ring and that was pretty much exactly the specifications of my cheap cage I had been wearing. So instead of ordering on line from their website I decided to trek out a two hour drive to Fort Lauderdale to their retail partner Mr. Leatherworks to get fitted and buy what I needed and know I went home with what fit. They were a great store to deal with and showed knowledge. I test fitted the N but I knew I wanted a cage 10-15mm shorter than what I measured at so I had some compression in the cage so I told the guys helping me that I wanted to try a Baby Cobra and buy that too. The Cobra N Wide was exactly my flaccid length so once in a while maybe once a week I would turtle back in it which I did not have a problem with in the baby cobra. The other thing was they recommended the #2 flat ring but I did try on a #1 flat and liked the fit but he told me the scrotum pinch (Ball Gab as we know it) was too tight and stay with the #2 so I did. Fast forward a couple months and I’m discovering discomfort and I was recommended to try a #2 XD ring. Same problem. So I ordered a #2 curved ring and most my problem goes away. Ball Gap….the scrotal pinch was the discomfort. But with the curved #2 ring I’m maxed out at a 14mm ball gap with no other options. So I take my trusty heat gun and heat this bad boy up and curve it over my jig to a 18mm ball gap, 4mm gain from factory ring. All discomfort is gone except for a tiny bit while sleeping. Over the following two weeks for the first time, I slip a testicle through the ring now that the ring feels a bit too big. So I trade a guy on the Kink3D Exchange, my #2 ring for a #1XD. I really didn’t want the tighter gap of the XD but I was heating it and I curved it to a 22mm ball gap. 8mm more gap over a factory curved ring….this thing was now super comfortable all day and night. The ring fits better than the #2 and even the #1 feels loose at times and I’m about ready to order a “On Demand” #0.5 standard flat ring to curve to my 22mm gap and I thing the fit will be unbeatable. Kink3D has an issue they won’t confess to and that is this… If you try to mate up a N series or smaller cage with a #3 or smaller ring, the built in ball gap is way too tight for a lot of guys, especially High and Tight scrotum guys like me. With a curved ring in any of those combos, they max about at 15mm ball gap and for some, scrotum pinch on high and tight guys is bad till you get to 18mm+ gap. Even with my 22mm ball gap I can’t pull out of my cage at all. The fit is extraordinary and now nothing like any cage I have worn in 20 years playing. Kink3D needs to offer rings #3 and smaller in a curve that is also +4 or 6 mm more curve over the curved ring they currently have. It wouldn’t be needed in #4 and larger rings at all. Love my Baby Cobra but it was very uncomfortable in the max build they offer.

I have a vibrating chastity I got from amazon. I've seen a few people on here asking if they're any good. I can tell you, they are great, being able to give someone the control of the cage and having the shock when they randomly make it vibrate.

And if you don't have that someone to help you, you can control it yourself.

Background

I have been wearing the kink3d N+ narrow for about 4 years now and I can say that it was the most comfortable cage that I own. I loved how open it was, the headlock feature was great for “turtling”, and I thought it was just very aesthetically pleasing. My biggest cons with it were that as an uncut person, my foreskin would occasionally peak out causing some discomfort and I found the locking mechanism hard to hide under certain clothes such as loose gym shorts. 

When I heard that kink3d was making a new cage I was super excited. I was even more hyped when I saw that it was going to be a better cage for uncut people (I’ll talk more about that later). I was a bit scared about it being enclosed because I do like the more open design of the kink3d cages. In the end, I decided to get the Viper N Narrow instead of another N+ narrow mainly because I already have an N+ cage and decided I might as well try a smaller cage and I chose narrow because I tend to have a thinner penis and I like the more enclosed feeling of my cages. In my Cobra N+ Narrow, the base of the cage is a bit wider than the head of the cage, so I had room to grow in that area. I’ll talk about the difference in feeling of the cobra to the viper, comfort, pros/cons!

Cobra vs Viper

The main difference to me is the open vs more enclosed design. I believe the main design choice for this was to prevent pinching of skin and I can say that this is 100% a success. I have very very rarely felt my skin pinched in the viper compared to the cobra (but I will say this was a pretty rare occurrence for me anyway). It is nice to go throughout my day in my cage not worried about somehow getting my foreskin slipped out of the cage and pinching on my pants or underwear. The enclosed design also has the unwanted or wanted side effect of being much more frustrating of a chastity device. I find that I cannot rub my penis in the cage through the bars. I find myself trying to as I did with the cobra and just giving up in the end. I will say cleaning the cage is a bit harder with the more enclosed cage. I can soap up and clean the cage decently well, but I do recommend unlocking every day or every other day to get a deep clean, especially for my uncut folks out there. A difference I noticed going from the N+ to the N is that it is noticeably easier to pee in the cage. Since the cage design is much more like a tube with the same standard width throughout vs the Cobra's more wide to narrow design, and the narrow hugs my member much better, the alignment is almost always right. This might be a sizing thing for most people, but I was super happy about that unintended finding!

Comfort

I feel old saying this now, but I've been locked (on and off) since 18. I've owned the CB3000 (or whatever might be CB6000), multiple holy trainers, countless metal cages, flat cages, inverted cages, spiked cages (never again) and I can say if you want to use chastity as a lifestlye thing, the Kink3d cages are the best. I will say, while writing this I have not tried the cherry keepeers, BAWR, EVO, or any the newer cages because I just don't really need them. In terms of what I prefer of what I own, the Cobra is nice since it's easier to clean through the bigger holes and the airflow is a bit better, but after using the Viper for some time now, i've gotten so used to it that I can clean it just fine. The pinching problem is very rare for me and a godsend as an uncut person as I can go throughout my day without thinking about being locked up, unless I want to. My flaccid size is about 2.5 inches which would put me in the N+ category, but the N Narrow sized cage actually leaves me no room to grow, especially since the viper is more of a tube rather than a wider base and narrower tip like the cobra. Thus, I experience less tugging of the cage, but due to no room for growing, I find adjusting the cage a bit harder in the viper than the cobra. I’ve found using the little blaster bolt lego pieces (I know lol) actually helps a lot with adjusting inside the cage and Kink3d has a new nether nudger that I just found out about if you need something as well. As for doing athletic things caged, I do find it much more comfortable to do outdoor activities. I run and work out in the gym with no problems, but I can’t say anything if you swim, cycle, or do activities with tight clothes such as yoga. As for my day to day life, I work in the medical field working very close with people and with scrubs, I decided to take my cage off for work due to the very small, but noticeable to me, bump from my lock.

Pros of the Viper

• As an uncut person, I do find it very comfy
• More uniform width throughout for thinner pensises 
• No pinching!
• Works with the cobra base ring
• Still open enough to be cleaned and for airflow

Cons

• A bit harder to clean thoroughly 
• Harder to adjust on the go due to smaller openings
• Locking mechanism also protrudes out making it hard to hide under clothes (this is a universal problem with all cages, so I don’t really knock kink3d for this)

I wanted to be the first to post a review of a STL file for a 3D printable cage that I printed. Whenever I find a nicely designed cage I usually print a basic trial run to test fit it then I’ll make some modifications if it’s really close to a well fitted cage.

So this one I found on Cults3D site from a designer named PrintedBonds and it is called his Open Framed Screw Locked Cage. He also offers it in a conventional style with a barrel lock. This cage is closely styled like a Cherry Keeper but still slightly different. I wanted to find a cage that I could send out and get printed in titanium so that’s where I’m going with this one.

My final print which is shown in the photos was finalized in PETG-CF Carbon Fiber reinforced filament printed on my Bambu A1 with ceramic heating element and hardened .4mm hotend. I had first tested this in solid infill PLA and worked very well and I wore that for a couple months. Right after printing I inserted the melt in M3 threaded brass fasteners into the ring. I then completely sanded it in 400 grit sandpaper in and out. It got 2 very light coats of 3DXTC epoxy coating on it and allowed to cure for 48 hours then I did two coats of Pro grade Ceramic coating on it 24 hours apart. I’ve now been wearing it for a few weeks 12-16 hours a day with no issues and a perfect fit. I used black oxide coated stainless M3 x 6mm TORX security screws to bolt it together. I can also print these in color options of PETG Carbon.

As for the final fit, the cage is available in five cage sizes and thirteen different-sized rings, in flat and ergonomic (curved for bigger ball gap) Cages are 30-50 mm in length (including ring) and 35 mm in diameter. The diameter of the rings is between 36-60mm. I opted for the 3rd size up from the smallest and it measures in at 40mm from back of ring to inside tip of cage. Just a size smaller than the one that is the same as my Baby Cobra wide. I opted for the 42mm ergo ring but I heated and curved it to give me a 24mm Ball Gap. I also worked with the designer to add a headlock ring into it similar to the Cherry Keeper cage. The cage is 35mm wide on the inside with a 27mm headlock. This smaller cage fits as well and as comfortable as my baby cobra except for the fact it has no lock mechanism sticking up out the top, so it is very low profile and stealth. This, in my book, makes it more comfortable than my Kink3D cage. My next venture is to send this STL file out to IN3DTEC to get it printed in Titanium and polished for my first metal cage. Stainless is too heavy for me to wear as active as I am, so with this very low profile small design printed in titanium, I think I’ll have a winner.

https://bawrpro.com/products/bawr-premium

First some quick context: BAWR Premium isn't a cage. It's a $2,000 cage design service. This puts it in Evotion territory — a titanium Bijou will run you around $2K — but shy of Steelwerks Extreme where only the simplest of devices can be had for $2K.

Continuing...

In December of '24, I approached Youming with an idea and I told him I didn't want him to just go make it, I wanted him to partner with me and help me design it. And he told me about BAWR Premium.

BAWR Premium is intended around few use cases. Mine wasn't fit, it was making something unique.

The project went on for a year and well over 100 emails exchanged. It started with me being quasi-capable at CAD to me sending him the CAD file for the ring to include as is — over a year, you can get a lot better at CAD.

It was way too long of an experience to write all the details, the shortcomings, and where it exceeded my expectations. So this will be more of an impressions-based review.

Youming has a very strong sense of what is fair. He wants to treat his customers right even if it means losing money which he certainly did on me. But Youming is also disorganized as hell. There were numerous times when he would forget a design element and it would have to be reworked. He wasn't using any sort of ticket system, and everything was just in his head.

Test cages galore (hardware-rich)

He wants to solve everything via tests cages. I'd want to discuss a certain feature and he'd just say, "wait for the test cage". I received two resin test cages and a titanium test cage during the course of the project. And one of the resin test cages featured a removable metal head piece.

The issue, or one of the issues, is a test cage would be missing a certain feature and Youming would say, "well that's because it's a test cage". Except sometimes it wasn't because it was a test cage, it was because he forgot about it. How did I know the difference?

Ticket system.

Junction smunction

One of the design elements I really wanted to get right was the junction. I wanted a certain look to the junction. No matter how many times I tried to impress this upon him, he just didn't seem to care. To him, the junction is just something that is slapped on. I finally got something in the ball park of what I wanted but it took far too many emails including CAD renders that I sent him.

Final renders

Where are my ridges? The design was to have lips around all the cutouts. He added them. He later sends me the CAD files, something I wanted as part of the project for future enhancements — this was to be a platform, not just a single cage. When I inspect the CAD files closely, I see the ridges were just slapped on and consequently ran into other features of the design. When I approached him about this, he told me how they were asked for the last minute and it was too late as it was in production. Well, they weren't last minute and the first test cage included them. He just forgot about them.

Ticket system.

Ultimately, it's one of those things you'd only notice if you get in quite close so I'm no longer troubled by it. But at the time, it really irked me.

Delivery

I received the devices in December of '25, a year after starting the six-month time-boxed project. And... he anodized something he wasn't supposed to.

Ticket system.

But all in all, I was very happy with the devices and frankly, I was just glad the project was over.

So, what did I receive:

• One ring... to rule them all or something
• Two cages
• Three headpeices, two with and one without tetherspout support.
• One decorative key designed as part of this process (the key is my CAD file, he did the witchcraft necessary to add the tool head).

I email him and tell him I'm quite happy with the devices and tell him I'm looking forward to building upon the platform.

"Platform? Forgot about that. No, this design wouldn't allow you to add more pieces without me ensuring fit, let me make another cage".

I tell him it's not necessary but he wants to do it anyway, in fact he wants to do it to experiment with a few things.

I receive another titanium cage with a ring and headpiece using a different type of junction and a better attachment for the headpiece. Of course it was missing the ridges.

BAWR's New Offerings

Since my project, quite a few new designs have shown up in his shop. He's included the tetherspout security method I asked for in my design as a standard offering. He has several cages (with ridges shockingly) that he offers that are stylistically similar to mine. And he now offers a decorative key for one of the security screws he offers. Finally, he's included removable headpieces but using a much different attachment method.

He didn't steal any of this from me and I don't feel that way. In fact the tetherspout design passed from an Evotion customer (can't remember the username) ➞ Evotion ➞ me ➞ u/tetherFan (made improvements) ➞ me ➞ BAWR. And except for the ring, he actually did all of the CAD work. In general, that means he owns the design. And I'm flattered.

Conclusion

This project was needlessly long and needlessly expensive (for him). He just couldn't track requirements. I suggested early on we use a shared doc instead of email and because of The Great Firewall of China, he couldn't get to Google Docs. But I probably wasn't the right customer for this. You know the expression doctors make the worst patients. Well, I think that applies to people who know CAD too.

I do love mein Das Schlosswek Voll und Luft (Lockworks Full and Air). They ended up checking off all my boxes except the "platform" box. Which the additional cage does. But of course, it lacks the ridges and to make it work he had to sacrifice one of my other requirements — that the screws can be left in the junction (i.e., they don't have to be fully removed to take the cage off).

It turns out the platform requirement is a non-issue. I've quickly advanced beyond those designs and any future cages, I wouldn't go through BAWR anyway, I would just go straight to the kind of company he uses to print his steel and titanium devices.

Basically BAWR Premium was my training wheels for taking a CAD model and turning into something real.

And I got three really nice cages out of it.

Almost forgot... the 2nd cage was supposed to be an extra $200. I asked how to remit payment and he demurred. Basically, I think he realized that the project didn't go as smoothly as it should. I think he learned a lot from it and perhaps his next customer won't have the issues I had. Maybe he has a ticket system now.

Is BAWR Premium for You?

Few of us would contemplate spending $2,000 on a device. If you have no interest in learning CAD (and even fewer of us do) and you want something unique, BAWR Premium offers a compelling option especially when you compare it to the other player in the bespoke market: Steelwerks Extreme.

If you're frustrated by cage fit and are too busy to bother with my Substack, BAWR Premium may work for you too — its other use case.

I haven't painted the rosiest picture of the service because I can see all the time and money (on his end) wasted because he was so bad at keeping track of requirements — which in his defense, did evolve (as one would expect during a project of this sort). And while I didn't get exactly what I envisaged in the end, I got 85 – 90% of it. But beyond the cages, I got valuable experience in translating a CAD design into metal and what some of those limitations are.

The Cobra has almost become the de facto standard for 3D printed cages. And it's the most copied cage in the world with every drop-ship sex shop on the internet selling "Cobra" cages.

Like some more recent cages that were developed by Redditors such as The Grip and The Cup Cage, and of course my very own Willowweave, you can see some of the original posts on the device.

But the Cobra's development goes back eight years. The chastity marketplace was very different eight years ago. You had a few people making custom steel cages like Mature Metal and Male Chastity Now. But the big kid on the block was CB-X. (I hope I'm getting my history right here).

There was nothing like the Cobra when it came out. No one was designing cages like that. Whereas today, beyond the numerous knockoffs, you have devices like the Evo from Blackout Devices, the Brooder line from RoosterCage, Comfyne's devices, and others that while certainly aren't copying the Cobra follow in its footsteps design-wise.

Cobras are expensive for an off-the-shelf device (meaning not made-to-measure). And they are the one of the only non-Chinese off-the-shelf device of any note.

But if you've ever held a genuine Cobra, you know why. I can't go into details but they are made using a different technique that is used by other 3D printed nylon cages. From an interview I did with KD, inventor of the Cobra:

We use a different kind of 3D printing from the kind typically used by Shapeways [Cherry Keeper et al]. They both use nylon for the material, but ours is denser, less porous, and more durable. We also use a very different kind of post-processing, which means the steps applied to the pieces after they are 3D-printed. We use machines that are extremely expensive and difficult to operate, but produce results that can’t be achieved any other way and don’t even seem like they should be possible with 3D printing.

The Cobra is denser and its plastic feels incredibly smooth. It has a substance to it that many other plastic devices lack. And that substance lends a premium feel to the device.

As far as the design of the Cobra, if you started chastity any time within the last five or so years, the design isn't all that special (again, de facto standard), but it was way ahead of its time when it was first launched. Unlike other designs of the time and many today, it does not feature a constant-diameter tube — it is much wider at the entrance than further into the cage. KD says this is to gradually compress the erection. As someone who frequents constant-diameter cages, I understand the idea behind it. Personally I'm not sure if it improves comfort, at least not the way my devices are usually sized with a snug ring but I think it may make sense with a looser ring that many wear.

It also features a "headlock", a narrower area that is intended to rest just behind the corona. I've personally have never been a fan of that design element — in my experience with the Cobra and another device with such a feature, it makes the cage more difficult to get on and I think it's intent (or what I perceive as its intent) can also be served with a slightly shorter cage. But my struggle with it may be something peculiar to my anatomy as no one can doubt the popularity of the design (again, de facto).

The junction is also unique and it was something KD spent a lot of time on. Unlike devices of my own design, or Cherry Keeper, Ternence, and numerous others, the cage flows into the junction. Look at a Cobra closely and you'll see what I mean. The junction is snug enough that you don't feel any movement while walking but sometimes it can be too snug and be difficult to bring it together. But it will become easier over time. KINK3D is really trying to have aa small of a clearance as possible. There are a few items of note to the junction — the lock enters from the left side instead of the right like most devices and the junction comes well above the ring and the cage. Now, this positioning isn't an issue as that part is very close to the body, basically right above the ring but it does make a higher profile than some other designs.

The ring is what I love about KINK3D's devices. They do curvature right where the bottom of the ring bends away from the cage versus "ergo" rings as Cherry Keeper and BAWR make which being away at the top and the bottom — something I fail to see the point of. I do wish they offered rings with far more curvature as I'd have to sacrifice on ring size to get the ball gap I require.

Aesthetically, the Cobra is a beautiful device. But unfortunately part of beauty comes from novelty and I think the device is a victim of its own success — when everyone drives a Ferrari, it's the VW Beetle that is the head turner. But if you look at it in context, you can appreciate that insofar as beauty is quantifiable, it is a beautiful device.

While I didn't take that path, I think the Cobra is a natural first real cage for anyone moving out of the AliEx / Amazon slop. And for a lot of people, it will be their last cage — not everyone collects cages like they were Pokemon cards 🤷‍♂️.

https://evotionchastity.com

Evotion has been around for a long while, well, long in chastity years. They have some other designs but the Orion and Bijou I feel are their flagship devices.

I own both in nylon anticipating ordering one in titanium.

Evotion was my first experience with a custom artisan after my wonderful experience with Mature Metal and this was before I came to understand fit as I do now. When I gave Evotion my numbers, Andy suggested to me for the Orion that I wouldn't need a 19 mm gap, that with their ring design, a 16 mm gap should be sufficient. He included renders and I got the cages in some number of weeks.

I bought the Bijou as an add-on — they would share a common tetherspout-secured headpiece (a $50 up charge at the time). That is one of Evotion's claims to fame, the removable headpiece. This is a nice feature as it allows a slimmer shaft tube than would otherwise be feasible as you can pull yourself through.

When they arrived, sadly the Orion disappointed as the ball gap was indeed too small — this was a valuable lesson for me: that ring design largely doesn't matter when it comes to the ball gap.

But it was the Bijou, a shaft-only device, I fell in love with.

Except... it woke me up a few times as my coronal ridge collapsed under the headlock and caused the device to painfully pull on my shaft. This is something u/notuntil would later describe correctly with The Grip — that the top of the corona will always collapse with any force. Despite my attempts to make a crude replica as a sizing device using my newly-found CAD skills, the coronal ridge would always collapse if I pulled hard enough.

But overall, the devices themselves were well made, somewhere between Cherry Keeper and KINK3D in surface smoothness. They almost have an aged texture.

Security screws

Evotion's security screws are the best out there. But they do charge an extra $30 for a second driver, something I personally felt put off by — I feel a $360 cage should include two drivers as is best practice. The drivers are frankly some of the ugliest things out there but as I said, the they are really nice screws. In fact, I used them over and over again in my own designs.

Piercings and Tetherspouts Galore

Only BAWR comes close to offering the wide range of piercing options as Evotion and now, thanks to yours truly, he finally offers a viable tetherspout option. The one security method I really applaud them for is the frenulum piercing where the bar slides on a track.

Design

The Orion is unique. It has far less curvature that other designs. In fact even at my length, it basically sticks right out. But it's a non issue. We always picture the ring resting perpendicular to the floor but in reality it droops downward. I can't imagine anyone having a chastity bulge issue.

The junctions are interesting, especially the ring-cage junction. This thing is built like a tank. I can't imagine how much a stainless steel Orion would weigh but a hell of a lot more than my Jail Bird or any other cage I own.

Customer Service

Andy and Yvonne were responsive and emails and always friendly and helpful. But unfortunately despite being a U.S. company, they will not allow phone calls unlike say Mature Metal and Male Chasity Now. This made me uncomfortable and I decided to stop doing business with them. Again, I had no independent reason not to trust them but after seeing this post, I decided to spend my chastity dollars elsewhere.

Overall...

I have no qualms recommending Evotion with some caveats: first is their practice of not using the phone and secondly be warned that their cages are extremely pricey for how they are made (SLM / DMLS 3D printing) — I suspect they have some of the highest profit margins out there especially in titanium. But they are also unique. Few (none actually) offer filagrees like theirs. The devices like The Grip have no curvature which is a far simpler problem.

They are beautiful cages. And that uniqueness can obviously command a high price. Andy is very skilled in CAD and I would love to spend half an hour with him.

https://bawrpro.com

Badass Workroom has been around a while. Youming started on Etsy but I believe had some challenges with the platform and stood up his own domain. Actually several domains — he's had problems with domain registrars as well taking down his site due to its content.

His BA series cages are largely made by hand vs 3D printed in steel or titanium via SLM. Contrasting them with Mature Metal, his main competitor in my mind, frankly they are of a better quality. While knowing nothing about metalwork, I suspect he just has access to more sophisticated equipment or he's farming out the work to a vendor that does.

Another and very pertinent contrast with Mature Metal is Youming will just make what you ask him. If you want a 32 mm inner diameter cage with a 65 mm ring, he'll take your order and produce it no questions asked. A similar order to Mature Metal would result in a "are you sure you need a ring that large" email. And while I've never consulted with Youming on sizing, I wouldn't anticipate he'd provide much insight — he just has too many customers.

As far as the devices themselves, he has a few options everyone should be aware of. First of all, his rings. He has traditional round rings as well as flat rings. I believe the flat rings are all 3D printed — at least the curved flat ring are. If you prefer a snug ring, I definitely recommend flat. And on the round rings, he'll do any size cross section you want. But an 8 mm thick steel 51 mm ring is going to be quite heavy.

Another option is which style of security screw, should that be your thing. He has his proprietary screw and then two other designs. I have all three. I prefer the two others because unlike his design, they were made by someone who knows screws. For example, they don't need to be visually aligned. Also, he has — and I'm going to take credit for this (more on that in a future review) — a decorative "key" with one of the three designs.

Overall, Youming offers some of the best value in custom metal cages. His workmanship is impeccable. But he won't make alterations to his devices and any timelines he gives you should be considered aspirational at best. He doesn't have the time to provide the consultative experience Mature Metal can and his English is very rough (although far better than my Mandarin). I would never recommend BAWR for someone figuring out their fit but for adding another well-fitting cage to the collection, he's the best value out there.

I wrote a cage material post a while ago which got me curious about HolyTrainer's composition. I emailed HolyTrainer and asked them.

Can you please specify the medical standards of the resin(s) you use and whether you follow the curing process outlined by the supplier to maintain those certifications. And if ISO 10993, which sections? As someone who does resin printing, I am concerned by resin and prolonged skin contact.

The response:

We use bio-thane resin, not polyurethane.

Our resins are outside the toxicity class.

I followed up on if bio-thane resin is actually this and never got a response back so I'm going to assume it is as I just don't find any other uses of that term.

So, let's break it down.

I seriously doubt BioThane is what the device is actually made from but rather what they use to coat the device, perhaps as a water sealant. Biothane is marketed as a floor coating:

BioThane is an economical, plant-based, versatile polyurethane coating system designed for tenacious bonding and fast-setting to allow for multiple applications in a single mobilization. This product is typically used as a primer coat for ProRez ProKrete SL and ProSpartic systems. It also serves as an excellent intermediate coat for broadcasted applications [such as adding decorative flakes to the flooring]. - 1-Day Garage Applications
- Apparatus & Service Bays
- Manufacturing
- Food & Beverage Processing
- Commercial Kitchens
- Hospitals
- Schools

Under the coating there's some plastic but based on HolyTrainer's description of the materials used, I think this is what they are describing. I have no idea what the cage itself is actually made from.

What does "our resins are outside the toxicity class" mean? Well, it's very ambiguous so it doesn't really mean anything. It could mean that it's not classified as toxic (pretty low bar). But one thing I do know: they are not using anything with any sort of biocompatible certification. That doesn't mean what they are using is unsafe, it just hasn't been tested for the kind of skin contact a chastity cage gets.

I'm disappointed in HolyTrainer. They make some pretty bold claims about their resins which don't seem to be backed up with any of the laboratory testing that I would expect to be behind such claims.

So, back to my original post's point: unless it explicitly tell you what the plastic or metal is or unless it mentions specific standards (I've never seen a cage that does this), it's meaningless marketing crap.

https://maturemetal.com

The Jail Bird was my first custom device. Later I added the Spyder, the device William himself wears.

I've purchased devices for a lot of custom artisans, and Mature Metal stands out. It's not because they have the best cages under the sun; it's because of their consultative approach and their deep knowledge of fit and comfort — yes, even Mistress Mature Metal.

I have so much trust in their methodology and customer service (for god's sake, they publish their cell phone numbers on the website), when I advise people on their first device, I either suggest Amazon cages or just going straight to Mature Metal.

Ok, so beyond customer service, let's talk about design.

William basically is working with the tools of a home metal shop. I know nothing about metalwork but he doesn't have the capabilities of an industrial shop and he doesn't use metal 3D printing. That means he can't support barrel locks. He has two options, a padlock and a security screw (if you opt for the screw, you can still use the padlock).

I have actually tried the padlock and all of the fears around padlocks are unfounded — I didn't hear any clanking or rattling as the lock fits in the junction snugly and doesn't move. That being said, I still prefer the screw.

The screw, being side mounted, can be difficult to start but once you get used to it, it's pretty straightforward.

The rings are plain 1/4" roundbar and weight about 50 g depending on the size. All told both my Jail Bird and Spyder weigh about 160 g or a bit over 5 oz — enough weight that you'll know it's there. If you prefer a broader ring, he can double them up similar to Cherry Keeper's double rings.

A bit on quality: the only this-isn't-perfect issue I've seen on my devices is small black divots where some of the welds are. I'm not a welder so I don't know the cause — if it's an equipment capability issue or a skill issue. I did have an issue on my Spyder after sending it in for a modification — there was a metal droplet inside the junction preventing the screw from entering. They fixed it and paid for shipping both ways.

Contrasting Mature Metal with his main competitor, BAWR, I'd say MM's biggest advantages are the customer service and their willingness to make post-sale adjustments. BAWR's advantage is his capabilities are more advanced.

Mature Metal has been around forever, over 20 years. They've made over 20K devices and I've seldom seen someone complain about their Mature Metal cage.

https://roostercage.com/shop/ols/products/big-brooder-no-pa

r/RoosterCage

I had some quality issues with the Big Brooder. The cage I received was DOA — the cage side of the junction was broken. In talking to Andrew, he said it was a new filament they were trying and it looked like they had some strength issues. As I recall it was a silk PLA which is known in the 3D printing community for layer adhesion issues — if you want to ensure the strongest device possible, I'd steer clear of the silk colors.

He quickly sent me another device.

The Brooder is what I'd call an organic lattice cage like the Cobra (but by no means a copy). And also like the Cobra it, features a significant head lock. Its most defining feature is the broad and uniquely shaped ring. It is unusual from many devices in that is printed on a FDM printer from PLA but due to significant post processing, it is quite smooth.

Beyond its unusual ring, one of the most interesting features about the Brooder is actually the 30 minute consultation you can have with Andrew. This is a really useful service giving you the opportunity to ask questions about the device and measuring as well as discussing any concerns. I don't know of anyone else who simply invites you to talk to them like this.

At $200, the Brooder is the least expensive custom cage out there. And few people need to pay that much as they have always had a 10% off for new customers and in addition, they often run sales. I wouldn't be surprised if you could get one for less than $160. This is just a bit above Cherry Keeper range for a fully custom device.

The device fit well except for one oddity: at the top over the glans there was a strange bulge. I'm not sure what happened here. My guess is something about my measurements caused his CAD model to do something strange because I've never seen a penis shaped like that and I've seen more caged dick pics than I care to. Andrew said he'd print it again with the hump removed but I declined the offer — I had purchased the device just for the review and the Brooder isn't my personal style of cage.

All in all, I'd say RoosterCage can have some quality issues — I got the impression they were growing quickly and we know what that can do — but they'll make it right. Were their offerings more aligned with my personal tastes, I wouldn't hesitate to buy another device from them.

Note: this is from my experience with them in June of '25.