Fighting Dust #13: DIY Blast Gates pt 3 - Dimensions

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Blog entry by ChunkyC posted 01-21-2012 08:42 PM 6001 reads 1 time favorited 4 comments Add to Favorites Watch
« Part 12: DIY Blast Gates pt 2 Part 13 of Fighting Dust series no next part

Here are the dimensions of the gates that I built.

7-3/4” x 7-3/4” x 1/2 Birch Ply

3/16 Hardboard cut to fit the opening.

7-3/4” x 1” x 1/4” Hard Board. The 1/4” HB that I have access to is the stuff that is smooth on one side and has a rough texture on the other. I used a hand plane to reduce the thickness a little on the “rough” side.

Cut to fit the diameter of the pipe that you’re using. I used a wing cutter on the drill press to cut the holes.

Pipe: (use what fits your system. This is what fit mine)
4” S&D Coupling cut in half (one half per gate.)
“Large” tin soup can. (Mine happened to be a can of fruit cocktail.)
3” DWV coupling. (This was a very tight fit with the hose. Hose had to be heated to install.)
4” Plastic Dust Collection Coupling

Poly Urethane Glue to glue the Pipe to the body. Spray a light mist of water on the body and put the glue on the pipe. PUG needs water to cure and the water acts a “kicker” to speed up the process a little.
Yellow Glue to glue the spaces to the bodies.

Generally these gates are larger than they need to be. I would think that you could narrow them up quite a bit if you need the extra room. They can be made smaller and still work just fine. I had to cut one gate down on the back side so that It would fit between the wall and the riser pipe. It still seals just fine.

Ok I’m done with blast gates, promise. lol


-- Chunk's Workshop pictures:

4 comments so far

View DIYaholic's profile


19623 posts in 2698 days

#1 posted 01-21-2012 08:52 PM

Done blogging perhaps, not making & using, I would think.

What if I don’t like fuit cocktail?

Seriously though, EXCELLENT job and thanks for taking the time & effot to do so!!!

-- Randy-- I may not be good...but I am slow! If good things come to those who wait.... Why is procrastination a bad thing?

View ChunkyC's profile


856 posts in 3278 days

#2 posted 01-21-2012 09:02 PM

That’s what I meant! I’m sure a lot of people are already tired of the blogs. What is it 4 blogs on blast gates now?

I’m happy to share my experiences and answer q’s that you might have though.


-- Chunk's Workshop pictures:

View Tennwood's profile


112 posts in 3205 days

#3 posted 01-22-2012 03:48 AM

Just discovered your blast gate blogs. Neat idea. Do you have any problems with duct and chips getting in the corners keeping the gates from fully closing? That is the biggest issue I have with the plastic and metal gates. I like how you attached them to the S&D pipes, another issue I have with the plastic fittings.

-- Jim, SE Tennessee, "Don't spare the kindling Dear, we have plenty"

View ChunkyC's profile


856 posts in 3278 days

#4 posted 01-22-2012 03:53 AM

Phil: Yeah, no back. As I said, they are “pass through” style blast gates.

-- Chunk's Workshop pictures:

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