Hello!
Could anybody recommend or point me to the recipe of basic oil based clay? Please!
I know that's a weird question with a lot of "why would you do that".
I'm currently using plasticine – oil based clay for my master models, and then make slipcasting forms out of them.
I use hardest type of it, available at the art/hobby shops. It is usually grey or terracota-red, but this doesn't matter, just to understand what am talking about.
My current guess is to use dried earthenware or stoneware powder, add some wax or parafinn and some oil (like cooking oil, or motor oil