I was wondering what the best moulding and casting materials are if I want to cast my scratch built Boba lid. I've heard many use Smooth-On products, but specifically which ones? There are quite a few so I'm not sure which would work best for this project. If anyone has done this before and has advice to give, and what products work best in this context, I would be very grateful. My apologies if this topic has been brought up recently.