I honestly don't buy into the whole 'you need a completely different set of tools for working with Bronz'. I just clean my tools thoroughly between working with both and haven't had any problems thus far. I just go over them with a microfiber towel when done washing them and make sure the nooks and crannies are taken care of. I don't personally work with molds much though, so your experience *might* vary. I'm just not sold on it being such a big deal. It's a material, not magic! 