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LiquidRulez · 10-02-2002, 02:14 AM

unless you are melting and pouring the copper in a controlled envirement(ie, no oxygen) you are always going to get air pockets. i t doesnt matter how many holes you put in the casting to let oxygen out.
oxygen attaches to the molten Cu at a molecular level.
you have to devise a way to control the processing envirement before you can get good results with casting Cu.
you must remove the oxygen in the atmosphere first.:shrug:
why do you think steel, and misc. metal companies and manufacturers spend so much money on equipement? because if it were as simple as heating the element to melting point and pouring it in a mold, then everyone and their brother would be casting their own metals instead of paying out the ying-yang for it. copper is probably the worst metal to cast with, especially when you need it to be 99% conductive and oxygen free.
i hate to rain on you parade. but i can tell you that you are wasting your time. not trying to be an A$$hole, but thats just the way it is unless you have the proper equipement. i have a large amount of copper shaving that i am saving in hopes of figuring a way to do this very same thing and casting it oxygen free.
ive done alot of research on the subject and i can tell you that it is not going to be an easy or inexpensive project!

physics is a bitch aint it?

10-02-2002, 02:14 AM	#11
LiquidRulez Cooling Savant Join Date: Sep 2002 Location: In Hell Posts: 322	unless you are melting and pouring the copper in a controlled envirement(ie, no oxygen) you are always going to get air pockets. i t doesnt matter how many holes you put in the casting to let oxygen out. oxygen attaches to the molten Cu at a molecular level. you have to devise a way to control the processing envirement before you can get good results with casting Cu. you must remove the oxygen in the atmosphere first.:shrug: why do you think steel, and misc. metal companies and manufacturers spend so much money on equipement? because if it were as simple as heating the element to melting point and pouring it in a mold, then everyone and their brother would be casting their own metals instead of paying out the ying-yang for it. copper is probably the worst metal to cast with, especially when you need it to be 99% conductive and oxygen free. i hate to rain on you parade. but i can tell you that you are wasting your time. not trying to be an A$$hole, but thats just the way it is unless you have the proper equipement. i have a large amount of copper shaving that i am saving in hopes of figuring a way to do this very same thing and casting it oxygen free. ive done alot of research on the subject and i can tell you that it is not going to be an easy or inexpensive project! physics is a bitch aint it? Last edited by LiquidRulez; 10-02-2002 at 02:25 AM.