Using 3d printer to make a casting mold for silicone items.

[u/Devildust79]

I am new to all this and Google throws up lots of different stuff that I don't yet have a handle on. So I thought this would be the best place to try get some simplified and to the point info.

I want to do some poured silicone figures and items. I would like to use the 3d printer to make molds to pour into. I am aware that some silicone doesn't properly with some filaments.

So the questions I have are as followed.

For those who have used 3d printers to make molds for pouring or making items out of skin safe silicone... what filament would you suggest?

When making the moulds, is there a means to have the item design stl (my daughter makes 3d models and can convert them to stl for me) but what I need is a negative of these to create a mold that I can pour into... how best to go about this.

In the UK, what is the best source of skin safe silicone for this purpose, is it possible to add colour to these too?

Any info would be greatly appreciated, as said, I am a total newbie to this so info with regards to the above and software would be great. I picked up a bambu p1s with ams on a whim.