don't get cheated on comp heat sinks

Here's some I have on hand. I scratched my head on this for a while and hit with my hammer for a while. I have a propane cooker, the type used to deep fry turkeys for Thanksgiving. So I had a stainless steel basket I put the heat sinks in and heated them until the solder melted. I grabbed the hot heats sink with plyers and wacked them against a hard object. The cu part seperated nicely. It gave me an idea of how to distroy the information on hard drive dics. I'll put up some photo's on that when I try it out. Mike