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120 Re: Dust Collection Systems




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This article is from the Woodworking FAQ Collection 2, by multiple authors.

120 Re: Dust Collection Systems

From: jeq@laidbak.UUCP (Jonathan E. Quist)
Date: 19 Dec 88 20:13:02 GMT

>One of the final conclusions that I came up with was that 5 inch pipe
>is about ideal for a home shop and this was verified by an engineer
>at Cincinnatti Fan. With 5 inch pipe and their 2 HP dust collector you
>could run about 100 equivalent linear feet of pipe and get about 600 cfm.

One point to bring up here.... every 90 degree bend in the pipe is
roughly equivalent to 8 feet. (This may be different with larger sizes.)

Our brand new clothes dryer didn't work quite right until we replaced
the flex tubing that came with the house with rigid 4" duct. The
dryer had a limit of 50 equivalent feet; some calculations on the
old flex duct indicated that we had nearly 110 feet after everything
was considered.

Rigid metal ducting would eliminate the grounding problems you
anticipated; I don't know how the cost would compare. The PVC pipe
is probably a little easier to work with. The aluminum duct I installed
had a mind of its own until all the joints were taped.




 

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