Reply by Paul Stoops

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Posted on Dust collector can collapses!!

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Paul Stoops

348 posts in 2588 days

#1 posted 03-09-2012 03:57 AM

Since you are using a shop vac, the static pressure is going to be relatively high. With the large surface area of the garbage can, it will be difficult to keep it from collapsing without some sort of internal or external stiffeners.

One possibility would be to fabricate some sort of adjustable pressure relief valve which will open when the static pressure (~vacuum) gets to a maximum point short of collapsing your can. This could be a spring loaded device or a weighted flapper type valve.

Another possibility would be to use a vacuum cleaner hose fitting that has a variable opening (usually a sliding panel) to reduce the amount of vacuum applied.

You might checkout the Phil Thien website—some folks have had the same problem with their systems with the Phil Thien Baffle installed and have come up with alternate solutions.

-- Paul, Auburn, WA

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