[kenbarra]

Thanks all, Especially Switcher.

So Switcher, can you describe the transition from full z depth to no wheel contact?

Is it a z-axis feed[G91] as the x-axis continues at the original [g91] feed?
What is the relataion/ratio? (2ipm along x-axis to 1imp along the y-axis)

Is there any y-axis movement during the operation?

Does the c-axis change during one part. I can see that the c-value would be different depending on the lead angle (helical pitch). But that should be constant for my application. I have seen the variable angle endmills for cutting aluminum.

Thanks for your time. I really appreciate you sharing your expertise.