isn't the issue the time and circulation required to remove the dust? those ceiling mounted filter units supposedly remove the small particles but if it takes 6 hours to do so, there's not much of a health savings. If you don't want to wear a mask, you need dust removal in real time as its coming of the machine, and as per the other thread, home shop set ups (as most don't vent outside) that do so seem to be very rare. |