I tried asking these questions on cnczone and could get very little response as well.
Either most people are using routers or don't seem to care. (Not a criticism just an observation)
Mobius wrote:Greolt, I think the primary benefit to a water cooled spindle is low spindle weight and less noise, rather than heat dissipation.
armbrusterco wrote:You should not need air assist. Instead, I use a "gas spring with ball-joint fittings" form McMaster-Carr on my Z axis to offset the weight of the spindle. I chose a gas spring with "available force" similar to the weight of the Z axis and spindle added together, and a stroke a few inches greater than my Z axis movement. Not very expensive. No maintenance required.
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