Reply by Fred Hargis

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Posted on My first dust collector

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Fred Hargis

6509 posts in 3379 days

#1 posted 08-25-2016 07:41 PM

Most of the time the factory CFM numbers on DCs are about as accurate as the 6.5 HP painted on your shop vac. By the time you hook it up to anything, that number will be cut roughly in 1/2. The Pentz number of 800 CFM is very ahad to achieve, usually taking a much larger DC and 6” ducting (minimum), to say nothing about the changes needed to most factory tool ports. If you intend to just use 4” flex for your mobile setup, i think the unit you show would do just fine. So would the HF unit unit (with some mods). the extractors have other advantages besides quiet, they are made to a much higher standard than the cheaper vacs and typically have a very long life. But to the hobbyist woodworker I’m not convinced they are always worth it.

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