Interesting idea. Rather than trying to keep the work at room temp, keep the
work predictably above room temp? Makes a lot of sense.

I was thinking some kind of cooling bath with circulator. Water has a high
heat capacity, compared to metals.

Christopher A. Young
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Greetings Joe,
At first thought, at least to me, the following idea seemed kind of
hokey, but maybe it will work. How about using a heater? Instead of
waiting for the head to heat up or having variable results in
different shops why not use a thermostat controlled heater? Then the
thing stays at some pre-determined temperature and tight tolerances
can be held.
Eric