On Mon, 26 Jan 2026 at 12:45, gene heskett <[email protected]> wrote:

> > I suspect that the real answer is either a higher resolution encoder
> > disc or using a floating tap holder.
> A higher resolution encoder? What I have is probably overkill so let me
> describe it.
> The A/B signal portion of that encoder is a 1000 ppr omron,

You didn't mention that, all you mentioned were 8mm prox sensors and
the ATS-667.

In that case, and if the problem really is a phase lag between advance
and retract when tapping, then it might be mechanical.

If you put a dial indicator on the head and jog down to the bed, how
far do you have to jog up again before the indicator starts to move?

-- 
atp
"A motorcycle is a bicycle with a pandemonium attachment and is
designed for the especial use of mechanical geniuses, daredevils and
lunatics."
— George Fitch, Atlanta Constitution Newspaper, 1912


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