"Anthony" wrote in message
...
"Ed Huntress" wrote in
:


One suggestion: don't anneal it until after you machine it, whatever
you do. You will pay for it in utter misery.

I was involved in machining 2000 cylindrical electrical connectors,
1-1/4" diameter and 3" long, once upon a time. The harder the copper
is, the better.



It machines really nice with PCD tooling. I used to size printing
cylinders right out of the copper plating bath, prior to engraving and
chrome plating. The biggest issue was birds nests.

Yes, that's a problem, especially in production. I reported on an operation
in western PA some years back that was turning disc-like copper pieces with
autoloading lathes (Wasinos). Their biggest challenge was breaking up the
birds' nests, which they finally accomlished after a lot of experimenting
with feed rates and cutting angles.

--
Ed Huntress