Summit City Precision Machining LLC  260-459-7031

Copper and brass look forgiving on the drawing and then punish you on the machine. Both cut with a smooth, easy feel, which tempts shops to run them hard, and then the part comes off the mill with a smeared surface, a ragged edge, and a burr that rolls over a critical bore. Good copper machining comes down to respecting how soft these metals are, how they deform instead of shearing cleanly, and how small changes in alloy and tooling change the result. At Summit City Precision