How do you cast at home Mold Making Casting DIY ideas

How do you cast at home Mold Making Casting DIY ideas POTTERY CLAY for making molds. The pottery clay can be different colors. Here, in Finland, I usually buy it in our local art and craft shop. PLASTER (GYPSUM POWDER) mixed with WATER in 1:1 PLASTER PRIMOSUPRA 70 made in Germany 1:1 ratio is 1 part or 1 unit of a particular quantity. For example 1 cup of cold water and 1 cup of gypsum powder. To find out the amount of water, you need to multiply the width by the height. For example, this round shape with a diameter of 25 cm. 25cm X 25cm makes 625. So for this particular job, you will need 625g of water. Instagram , cast, mold, cement