Plaster moulds?

[Ilyena]

Hi,

I'm not sure if this has been answered before but I cannot find anything. But can plaster be used to make moulds and will it allow silicone to set properly?

Many thanks

[ShyMer]

It should work fine. Ultracal, the kind that people prefer here, is basically a better kind of plaster is all from my understanding. Make sure you understand how to use it before you try though, plaster has a limited working time.
i also want to encourage you to read through Star's latex tail thread if you haven't done so, as a lot of that should be applicable. take notes to make sure you understand the process.

[Ilyena]

Thank you :). I was just thinking of using it for small shells and stuff.