I got a dual industrial blower unit given to me and I'm going to make a downdraft sandign table with it.
I've been all over the FAQ, google, etc. and while I've found a few insights but not really enough to get going with. I like this design:
I think I need more filter area.
I've seem commercial kits that have filters all the way around, but my kind of blower isn't conducive to such a design.
The only other idea I have is to build a carcass, put the blower in the bottom and put a 'ceiling' of filters above it, covering the entire inside area of the carcass, and then put the swiss-cheesed work surface above that.
My concern with that is that it doesn't have the sloped surfaces that other designs incorporate which seem to be there to equalize the airflow at the edges.
Anyone care to share their thoughts ?
Thanks,