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I am in the process of setting up my dust collector in the shop of the basement of the house we moved into recently. Today, I spent the day disassembling all the pipes, fittings and blast gates from the way I had them in a previous shop.

There are aluminum blast gates, metal and plastic pipes (ridgid and flexible) and plastic fittings. I the last shop in which I was able to pipe the dust collector, I did two things that didn't work too well. Maybe someone has a better idea for me.

First, I connected all of the joints and used screws and furnace tape to seal the joints. This worked fine. Unfortunately, on some I used construction adhesive to better seal the joint and now am having a bear of a time getting the fittings and pipes apart. Any ideas on how to loosen the glue to pull the items apart so I can use them in the new shop? Thought maybe a heat gun but haven't tried it yet.

Second, never got the pipes or fittings to attach well to the aluminum blast gates. Had tried screwing them together, but the self tapping screws wouldn't go into the blast gate. Finally just wrapped them good with the metal furnace ducting tape and they stayed put, but I wouldn't say they were very secure. I want to make them solid, and I hope this is our last move but who knows, so I want them to be able to be taken apart for reconfiguration or moving if need be. Open to ideas.
 

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Hey Mike
I use the aluminum tape and cut a small section of of pvc to slide into the inside connection on the blast gate and use aluminum tape there too.
 

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I have the aluminum blast gates attached at five different points in my dust collection system. I used some kitchen and bath clear silicone at all the joints that provides a good air tight seal, but still lets me pull it apart if I need to. I did have to move one blast gate after I got everything installed, and a quick strike with a rubber mallet loosened the joint and I was able to repositioned the gate.
 

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Discussion Starter · #5 ·
Well I figured out how to get the fittings apart that I had used construction adhesive on. I heated the outside joint up with a paint heat gun until it was good and hot. Then I put the pipe or cool fitting into my vise. The hot outside pipe loosened up the glue and I could twist it off. Worked great and saved me having to buy new parts.
 

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I'd guess you've already thought of this but in case you haven't and it applies to your situation I'll mention it. I have my shop in the basement and I have my DC outside now. There is less dust and when I burn some wood on the table saw,(it happens,) I don't freak out that I've created a power draft sawdust combustor underneath my house. The thing is if you have your DC outside you have to have outside air coming into your shop to make up for the air it sucks out. I was wondering why my smoke detector was going off and what the peculiar waft of hot air was as I walked down the basement steps one day, but before panic could take hold I slapped my forehead and opened a basement window. Nice breeze. I had been back drafting my HW heater. By the way it collects better with the window open too. Anybody know anything about fire sprinklers?
 
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