|Project by JoeC61||posted 04-09-2009 11:54 AM||10510 views||12 times favorited||13 comments|
This is a downdraft table I built using an old furnace motor/blower. Eventually, the side of the box where the motor is located is airtight from the other half. I drilled 640 1/4” holes on the downdraft side of the top surface. The sides of the box are made from 1/2” MDF, the top is particle board with melamine. Drilling 640 holes tested the ability of my DeWalt to recharge… It took a while to figure out how to drill the holes without chipping around the edges. The air is sucked through 2 filters, a cheap $1 pre-filter and then a more expensive HEPA filter. (both 20×25 and accessible behind the vertical strip on the front of cabinet) The temporary netting was installed to keep my dog from beheading herself on the blower blades. The downdraft doesn’t seem to be as strong as I thought it would be, but when I sand small projects it does remove the dust. So far, so good. The table top is 4’x5.5’. Wind blowing out the bottom isn’t a problem, probably because I keep my floor clean. If it was full of dust it would be another problem.
-- Joe-Carver, MN