We have plastic pierogie molds for making Pierogies that were purchased over 25 years ago. You put the dough on top of it then filling and a rolling pin rolls over the top to close. We can no longer buy them and I want to cast a mold and make more of them. Is there a food safe resin that I can use to make more plastic molds. That will be strong enough to use a rolling pin on top of it. Thanks so much!!