A while ago I read something on a forum (it might be this one) about a product that you can use to cast a object from a mould and during curing the product either expands 50% or shrinks 50% (depending on the chosen type).
Does anyone know what I'm talking about?
Stuff to 'grow' larger castings
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Stu Pidasso
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Yes. Smooth-On has a product that advertises that method. A few people have tried it, and found not really suitable for modeling parts, more like busts and low-detail figurines.
So me, trying to be tolerant of everybody's situations, went to a feminist picnic. Things fell apart fairly quickly after nobody made any sandwiches.