Yes, I need the tapping soon... I have a job in delrin and I wanted to test this approach. A floating holder is an option, but don't think it's good for my tiny Emco.... remember my tool turret? It has 10mm bores for ID tools. I think a floating holder will be too big for my turret.
As it looks now, Greg is not going to implement rigid tapping any soon
I think there might be simple work around - if I define the same pins to both A and Spindle, then I can use one at a time. Problem is, SS seems to be blocking this kind of setting. If setting so, I can move the A axis, but the Spindle won't rotate. I think it might be an easy fix for Greg...
For now, I'll have to use this same approach of defining same pins for A and Spindle, and disable the A under Ports&Pins each time I need the spindle, enabling it just when needed. It is a pain to do - will have to split the gcode.
But first let's see if I can use this approach of commanding Z and A move to accomplish rigid tapping. I need to tap M6 in delrin.... hope my spindle has enough power for M6 without being synched to the Z. The spindle does lag a bit under load, before it catches up... hope the load will be just small enough and won't affect the tapping. I only have a 4-flute hand tap, I wonder whether to do the tapping in pecks or whole the way down as you would do with a spiral tap.
Daniel