If you don’t have wooden boards, you can use household items such as a plastic container to contain the clay and plaster. But make sure it’s something you don’t mind dedicating to the project, as you’ll want to cut out the bottom of the container before using it as a substitute for casting boards. Ensure that the casting boards are taller than the item you’re creating a mold of. [8] X Research source
When the two halves start to part, turn them over and repeat the process on the opposite side. Once the mold is loose, gently pull the two halves apart.
This step might dry out your hands a bit, so those who are sensitive to that might want to wear gloves. That said, the plaster isn’t typically harmful to touch with your bare hands.
Keep in mind that you don’t want to pour any plaster down the sink, as that can clog pipes. This is where the water in the lined bucket comes in handy — you can clean up without worrying about your pipes![25] X Research source
Lightly nudge the table with your hip. Use your fist to pound the table. Grip the edge of the table and gently shake it. Any other method that works for you without being too rough!
