Sand Casting Here is my experiment using the sand casting process. Here is my slideshow on the process. The process to start with is to chop into the sand until it is fine then place the sand in the mould. You need to make sure that you use the section with the lip on the bottom. Each half has a marker and these have to be aligned. You need to fill the bottom half and then gently hammer the sand and press the piece that you want to make a casting of. Then next step is to put a small amount of talcum powder around the piece and brush away the excess.