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Finishing a small bore?

tjd10684

Cast Iron
Joined
Jan 26, 2011
Location
PA
I got a part from a customer that has a 3/8" bore and he is looking to get a better than a reamer finish on the inside. I have tried those little abrasive brushes and they are ok but a little more work than I really want. I have some money to invest in tools so I was wondering if there is something in between an abrasive brush and roller burnisher that can be used in a CNC lathe.
 
A Sunnen hone will get any finish or dimensional accuracy you need ,wont be anywhere as quick as a CNC machine tho......You may be able to use the CNC machine to push a stationary* ball burnish thru and back (non rotating.)
 








 
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