I have a 4 X 4 welding table with downdraft for sale. Has a screened drawer that pulls out to to catch what falls through the vent holes in the top. I am starting to downsize and thought there might be some interest on this site. Very heavily built not home made asking $650. Scrap is now $380 a ton so what will it cost to try and build one of these. I have a 6 X 6 I am keeping for now.