I've just configured my first emc project, a 9x20 lathe conversion.  I'm
using a large servo for the spindle - I'm hoping to be able to use it as a
4th axis for some light engraving down the track.

My problem - I've set up the servo for the spindle, but like a servo, it
responds imediately to change requests.  I haven't put a chuck on it yet,
but it I'm sure it will break the belt when it tries to stop from 1000rpm to
0, instantly.

Any ideas on how I can soft start and stop it?

At the moment, my configuration is to take the motion.spindle-speed-out,
into pid.command, and let it work itself out.  I'm thinking if I reduce the
Pgain that might do it, but then it would make it mushy under load.

Any ideas?


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