I am using very fine polyester fabric for my cheese cloth. It is curtain sheer fabric. it gives a nice smooth texture but I seem to be having problems. I can not get it not to have deep wrinkles and creases even after I pull all around. I am using one large piece and wonder if a bottom, sides and top would not be better. Mine is more like a bag.
Make a bag out of it with an impulse sealer to exactly fit the mold. Like a custom Kadova.