Welding fume hood.

admin

Ok so I've wanted to put in a fume hood for a while now so i got it up today. Sorry no pics of the build on the hood i was in a hurry, but i just bend the metal in half and tacked up the sides and caulked it all. Used a hole saw to cut a 2" hole, but still need to weld a small peice of pipe in there to connect it to the PVC. Let me know what you think or have ideas that would help. thanksThis is what i was using.To this!  Lincoln SA 200 Lincoln Idealarc 300/300 TIG
Reply:Good idea! I made mine from a large powerful blower I found at my transfer station. Dump guy said it was used to inflate one of those kid's jumping enclosures you can rent for parties. Did a little adapter work and hooked up an 8" aluminum accordian hose to the sucking end....mounted on floor in my shop's attic...and ran the other end of hose through the ceiling. The blowing end I ran into the cupola on the roof. When I'm welding or cutting....it looks like the garage is on fire with all the smoke pouring out of that cupola. That thing really sucks!
Reply:I don't know what you're using for suction, but the pipe diameter seems small. Tell us how it works out.__________________
Reply:Originally Posted by zekeI don't know what you're using for suction, but the pipe diameter seems small. Tell us how it works out.
Reply:So it worked ok, not the best tho...I used a 6010 rod and it kept up for a sec but once the hood and pipe filled the smoke started to roll out from the hood. should of went with bigger size pipe.Lincoln SA 200 Lincoln Idealarc 300/300 TIG
Reply:Great idea, but I have to agree on the pipe diameter. Also, I forget the equation, but for each 90 deg angle you lose cumulative CFMs. Not saying it wont work, but its food for thought.You can always wash your hands.
Reply:For this type of work, you don't need the high pressure vacuum that you with shop vac type units.  You need to move a lot of CFM, which requires larger diameter pipe and a high cfm fan.JackFort Loramie, OhioMilermatic Autoset 180