In article 36823a16-66f8-41df-bb94-347e5a6a4104
@l16g2000yqo.googlegroups.com, says...


If he vents it to the outside, the dust should be blown out with the
hot air.... rather than some of it recirculating back into the shop.
No?

The original question suggesta that he wants to use it like a ceiling
fan to circulate the higher, warmer stratum of air throughout the shop.