Hopefully this will make sense, if not, feel free to ask questions. So let's say I have a prop-type item that's food related but not actually food. I want to make a mould of it and make little candy replicas. I know I need to use food grade silicone but I have a problem getting to that step. I only have the one item but I need to be able to make the food mould have a lot of negatives so that it wouldn't be time prohibitive to make the candy. Question time: Can I press the item into a sheet of clay to make multiple negatives and then use silicone to make a sheet of positives and then use more silicone to make more negatives? And then pour the liquid candy into the last sheet of negatives? Basically would using the clay be a health hazard? Or is there a better way to do this?