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Thread: pail collapse cyclone shop vac
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28th December 2018, 10:27 PM #1GOLD MEMBER
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pail collapse cyclone shop vac
I have a shop vac with a cyclone separator ontop of a pail. Today the pail collapsed from the power of the suction - Ive had this setup for several months now and it never happened except today. I got a new pail+lid and it did the same thing. Any idea why it would happen now and not in the last several months? Ideas to stop it from happening again?
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28th December 2018 10:27 PM # ADSGoogle Adsense Advertisement
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28th December 2018, 10:54 PM #2China
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Blockage somewhere
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28th December 2018, 11:23 PM #3.
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Just one part of the bucket needs to become slightly weaker than the rest and if it gives just a bit they tend to collapse around that weak point. They usually collapse just a bit and thencrack which relieves the vacuum and stops it working. The fact that yours collapsed so much is a testament to how well it is sealed.
Few people realise that even though a shop vac typically only generates about 1PSI of vacuum - on a 12" diameter x 12" high bucket thats equivalent to > 1000 lbs of force spread over the bucket outer surface - It's a wonder more of them don't collapse.
To prevent it happening again get a stronger bucket.
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28th December 2018, 11:25 PM #4
Plastic + heat (very hot weather)= very soft plastic
The person who never made a mistake never made anything
Cheers
Ray
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29th December 2018, 12:57 AM #5GOLD MEMBER
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I reinforced the bucket by cutting some MDF rings to fit on inside of my bucket. Just screwed in through the sides from the outside. Worked a treat. I'd take a photo but the bucket is full and my slaves refuse to empty. It's hard to find a good slave nowadays!
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29th December 2018, 07:01 AM #6SENIOR MEMBER
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I have an original ClearVue mini mounted on a 20 litre wine juice pail. After a number of years of good service, the walls of the pail imploded in 3 places. Trying to undo the implosion is not worth the effort. I made some rings from some scrap hdpe and put them in a new pail. They do reduce the efficiency.
I am going to get a more robust and larger container in the new year.
Seasons Best
Don
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29th December 2018, 07:05 AM #7SENIOR MEMBER
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Hi qwerty I use a metal paint bucket the 20 litre ones and they last forever and come with a sealed lid with spring clip to seal.
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29th December 2018, 10:44 AM #8Woodworking mechanic
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After having multiple collapses, I picked up a plastic one from Bushmiller at Fence Furnitures get-together a couple of years ago. Really strong pail- still going strong
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29th December 2018, 11:16 AM #9Visit www.inthewoodshop.com for tutorials on constructing handtools, handtool reviews, and my trials and tribulations with furniture builds.
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29th December 2018, 12:17 PM #10GOLD MEMBER
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I hacked together a wooden ring and wedged it in there seems to have done the trick. I think a paint bucket is the go in the future though if I can get my hands on one - takinh off plastic pail lid is a real pain in the
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29th December 2018, 05:58 PM #11
Go to a local trade paint supply shop and ask them for empty metal 15 or 20 litre cans from the painters, bound to get a couple no problem
The person who never made a mistake never made anything
Cheers
Ray
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29th December 2018, 06:02 PM #12GOLD MEMBER
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I just put one bucket inside another.
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3rd January 2019, 11:37 PM #13
I don't know if retangular box makes it bad for air flow thingy.
I picked up a couple of boxes at the good guys dump in November tgen bought a shop vac before xmas, the cyclone was bought a few years ago. I put them all together to fit under my newly made work bench last weekend
the suction from the vac squeezes the top of the box lip in more than 10mm so i fitted a cross bar inside the box fixed that
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Somehow the 2nd n 3rd pics went sideway sorry!
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30th January 2019, 09:26 PM #14SENIOR MEMBER
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