thank you for the word of caution... and trust me I have read all that is listed on zinc and I have done research on casting zinc... Maybe I did not state it clearly in my original post and that is my fault, but when i stated that I had heard I meant I have read... Im not one to take risks especially when it comes to my health. With that said, I know that breathing the fumes from zinc can be harmful, but I have read where people have successfully and with no side effects have casted zinc at home. I have also read that the zinc fumes are basically harmless when at the melting temp, but when the metal is boiling then the zinc is evaporating at a high enough rate that the fumes are more hazardous. My plan was to smelt the zinc wheel weights with my forge and crucible, while wearing personal protective equipment, i.e my heat resistant leather apron, gloves, protective eye glasses, as well as using my respiration mask witch is rated for high fume rates which is found in and around the auto body and paint industry. My intention in posting my original question is that in my research i have not noticed anyone mentioning using Zinc Wheel weights to make knife fittings, I have read that some people have experimented with using it for casting bullets, but not for knife making. So is there anyone out there who has experimented with zinc casting, for this reason. I know that knife pommels and cross guards are sold that contain zinc but I do not know how well the material will hold up to this purpose, any help is appreciated.