Helibore. That's a new word for me, is that the same as spiral boring?
I used to work for a company that bought a brand new machine, and they claimed that the machine would not machine a round hole right so they always left stock and then went to the bridgeport and finish bored the holes on that.
After calling the dealer and a Mastercam tech support, I figured out that the machine required a R value for G02/G03 and not the I and J values, once I modified that post processor, then machine would machine perfectly round holes all day long.
Jim
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