J. Phil Thien's Projects

It seems to me that he designed his own blower that isn't a good match for a separator.  A typical shopvac moves few CFM but at high pressure.  A DC blower moves a lot of CFM but at low pressure.  His blower seems to move few CFM but at low pressure.  He would probably have been better off using larger fittings and not restricting the inlet of his separator, because I think that is all his blower can handle.  A quiet blower that uses little power and couples to a separator while still having enough suction to help with shop tasks is a pretty tall order.

Phil, did you ever do any testing on your units to determine what kind of effect they had on CFM?

Quote from: Bill Pentz on November 02, 2009, 07:11:54 PM
I tire of hearing this same argument. For decades I used a ceiling mounted air cleaner, nice set of dust collectors, and a large doorway fan that kept my shop well ventilated and often too hot or cold to enjoy. I saved diligently and finally bought the top magazine rated cyclone system with vendor designed and supplied ducting plus vendor recommended filter upgrade. Less than a month later I found myself rushed to the hospital with an apparent heart attack. That cyclone created a bad false sense of security because it left a clean looking shop while building up dangerously high invisible dust levels. Three months after I went to the hospital an air quality test showed my shop and home badly contaminated.

Oh common, that is B.S.  Unless you had a hole in your filter stage, no such thing was happening.  Anyone with a Dylos meter can tell you those types of assertions are bogus.

And there is no way your shop/home air quality was "contaminated" three months after running any machines.  That is preposterous.