Dust Collector Connection

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Project by Scott posted 04-20-2015 12:52 AM 2115 views 2 times favorited 10 comments Add to Favorites Watch

I decided to build an actual dust collection for my tablesaw and jointer. I used some scrap 4” PVC pipe. I cut into the pipe about 1” deep. Then I took it into the kitchen and heated it up on the stove (of course I waited until the wife wasn’t home!). I slowly heated it and bent one tab at a time (be careful because the PVC can burn easily). How’re I realized that the pipe wanted to go back to being straight when hot. So when I bent one tab, I had to go back and bent a few tabs before. Once everything was close to being completely bent, I heated the whole pipe and put some weight on it to let it cool with the tabs fully bent. I screwed it to the plywood enclosure I made and caulked it to make it completely air tight. It took me about 2 hours to build two of them.

10 comments so far

View WoodNSawdust's profile


1417 posts in 595 days

#1 posted 04-20-2015 01:14 AM

An interesting project and one I would not have thought of. Would something like this worked?

-- "I love it when a plan comes together" John "Hannibal" Smith

View Hawaiilad's profile


2884 posts in 2440 days

#2 posted 04-20-2015 05:14 AM

Sorry I have to ask, but can you show a picture of where you used it on the dust collector?

-- Larry in Hawaii,

View Ajs73's profile (online now)


133 posts in 937 days

#3 posted 04-20-2015 09:11 AM

I usually cut little 1/2” or whatever pieces off
of a coupling and glue to both sides of a exact
size hole, nice clean look and it will still swivel
if need be. Not sure of your application though.
Yours looks good to me, Nice job.

-- Andy, Alliance,Ohio

View KnotCurser's profile


1995 posts in 2487 days

#4 posted 04-20-2015 09:48 AM

First of all, this project isn’t supposed to be posted in this section as it contains no wood.

Second of all – THIS IS HIGHLY DANGEROUS!!!!!!!!! PVC, when burned outgases compounds including carbon monoxide, carbon dioxide and hydrogen chloride. Don’t Do This!!

-- Robert Rhoades WoodWorks / Email: /

View Scott's profile


58 posts in 774 days

#5 posted 04-20-2015 11:16 AM

It worked well for me. You don’t actually burn the PVC. You heat it up until it reaches the glass transition temperature, which is only 176F. I experienced no fumes or any off gases created in the process. The connection is mounted to a plywood enclosure I made for my grizzly tablesaw. I cut out a whole and slide it in.

View drbyte's profile


724 posts in 3481 days

#6 posted 04-20-2015 12:35 PM

Great idea! I heat weld and melt PVC for a lot of projects such as bows. A heat gun would work better!

-- Dennis, WV

View Redoak49's profile


1817 posts in 1407 days

#7 posted 04-20-2015 02:52 PM

It looks like a great adapter.

You heated well above 176 F based on the burned areas. If I were going to do this I would do it outside and be upwind.

It would be better to not do this in a living space and especially not where you prepare food. I think it is better to be safe and not take risks with these type of toxic gases.

View BoardSMITH's profile


121 posts in 1682 days

#8 posted 04-20-2015 07:08 PM

You can get a metal starter from Lowe’s for less than $10.00 and you will not have to go through such a process and take a chance on burning the PVC.

-- David

View Grumpymike's profile


1890 posts in 1734 days

#9 posted 04-20-2015 07:18 PM

Scott, I think your idea is very innovative and it worked for your needs.
I needed to expand some PVC to fit on some China made fittings, so with the heat gun and a chuck off of the lathe, I was able to soften it and expand the pipe just enough…
I too would like to see how you used this creative flange.

-- Grumpy old guy, and lookin' good Doin' it. ... Surprise Az.

View Scott's profile


58 posts in 774 days

#10 posted 04-20-2015 08:41 PM

Here is how I fit it onto my dust collector hose. I used a 4” to 3” reducer.

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