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Old 03-08-2008, 10:42 AM   #33 (permalink)
compressor#v
IronButt
 
Join Date: Aug 2005
Location: Michigan
Posts: 1,390
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Quote:
Originally Posted by KingofCubes View Post
Many cnc porters do it that way as did Reggie Sr back in the day when he started but he has since switched to a probeing process so he can identify and adjust core shift on the fly because what he found was the core had shifted .030" to the left and the machine was taking out material on the right that the velocity would be down on that head so he uses the dowel locators, the seat, and the port window as reference points and the probe to adjust the machining.
On his billet heads he didn't hand port and digitize because there was no port there to begin with so he designed the whole port in Mastercam. I've watched him make and modify ports a couple of times and now he writes macros and probes them.
Before the probing process, how does the CNC method deal with core shift? or maybe it isn't dealt with?
Thanks for the explanation Randy.
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