Good evening. I have an 8025MSI that I am trying to get to rigid tap a 1/4-20 hole in a block. I have 5100 pcs to do however, I cannot get the machine to perform the rigid tapping cycle. Right now the spindle jogs or jerks and it feeds to depth and stays at that depth while the spindle continues to jog. The cycle I have is:

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S500 M3
G99 G84 R Z.05 I-1. F250. S500
G80
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If I run a basic tapping program (without the R value) it runs just fine however I don't have a spring holder for the tap and do not want to break taps or strip threads all day. Any help would be appreciated.

Thanks
Chips17

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