Originally Posted by
gfacer
Update:
I have put a electric fan on the Z, mounted above the spindle blowing down. The fan is larger than the spindle so covers the outside of the housing but may not blow down the holes quite so well. Running it for 15min now, but I think the end result will be basically the same as before, give or take a few degrees. However, the fan has the benefit of continuing to cool once after the spindle stops, and right now it has the benefit of being wired up.....but not sure I would recommend the effort for others.
Edit: Basically no difference. I will try (again) to direct the fan output a little better, first go at it had way too much back pressure....more air coming out the top than cooling the spindle!
I think if this one dies or I buy another, I will try the Hertz brand from Turkey, I believe that has a built-in electric fan.
Greg