On 4 July 2012 21:37, Ralph Stirling <ralph.stirl...@wallawalla.edu> wrote:

> My thought is that it should use the C encoder all the time,
> but with a velocity mode for normal turning, threading, and
> CSS.  Encoder rollover would be needed, but 64 bits should
> handle an awful lot of revolutions of the spindle.

Rollover is a non-issue within the lifespan of most machines (5
million years at 3000rpm and 2048 counts per rev)
There is (somewhere) a config for aligning a milling spindle for tool
change, so it's a solved problem. I just couldn't find it.

-- 
atp
If you can't fix it, you don't own it.
http://www.ifixit.com/Manifesto

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