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mill 16 finish

Ballnose Bill

By Ballnose Bill,
in Industrial Forum

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Ballnose Bill Rookie

Ballnose Bill

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I am interested in milling a 16 finish on counterbores and ring grooves located on aluminum manifolds. These things vary in size anywhere from 2" dia to 3/8". CAN THIS BE DONE? I think an awful lot of polishing will be required. Some of these ring grooves, how do you even polish a .156 wide groove? Right now we put this stuff in a four jaw and lathe it away but the is not production.Anyone with any experiance doing this stuff. You just cannot get a phonograghic surface with a mill and I only have 7000 rpms. I'm told somebody does it somewhere, so is there anybody out there?

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