|Project by ldl||posted 07-20-2012 01:20 PM||9560 views||23 times favorited||7 comments|
I got the idea for this blast gate from Chunkyc. It is a 2 1/2” gate.
This is the first one I built. I used 1/8” hard board and 3/4” plywood. I used 2 1/2” hose coupler for one side and 2” plastic pipe for the other side because I used 2” plastic fittings out of my separator. I cut one approx 1” spacer for each side which fit between the two end plates to form the sides for the sliding gate. I used black electrical tape for a spacer so the gate would slide. I used polyurethane glue to glue fittings to end plates. I put together with screws only encase I had to change the spacing but one wrap of tape was plenty of room and slid smooth and snug.
The only problem with this gate is it is open on the bottom when the gate is open as I didn’t make it solid accross bottom and it would draw air through it while the Shop vac is on. I didn’t want to seal the bottom so it wouldn’t fill with dust.
I went back and redid the backing plate to accept a gate that was solid at top for no air and also drilled with a port for suction. This sealed the bottom hole as the gate hole formed a seal all the way around the bottom slot.
-- Dewayne in Bainbridge, Ga. - - No one can make you mad. Only you decide when you get mad - -