Quote:
Originally posted by grep
wondering if chilling the copper before machining would help. Want to try something even more fun to mill than copper, try Lead. Of course I can't imagine why anyone would try to make a heat sink out of lead.
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Well, no. The copper heats up from the friction of the bit in about 30 seconds. After about a half hout that chunk of Copper is very toasty. It taked 10 passes to complete the one on my site without destroying my mill and over an hour to do it. That block starts getting hot after the second pass.