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Reply by brtech

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Posted on Dust Collector questions, looking to buy my first collector

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brtech

1032 posts in 2973 days


#1 posted 02-09-2012 10:33 PM

No negatives if you upgrade the filter. An HF Gem for sure.

You can run 25 or 30’ of 4” PVC okay with that unit. Just use 45s and a straight pipe or a wide sweep elbow, and use Wyes and not Ts. Some LJs have even longer runs, but I gotta wonder if they are getting the fines. One idea is to hard pipe to your router table, and use a 10’ flex hose to everything else, using the Wye on the inlet of the HF DC (add blast gates of course).

It works to adapt down to 2.5”. Just remember that a shop vac and a dust collector are completely different beasts. I have a 2.5” inlet on my lunch box planer, and my HF DC does a great job with an adapter – much better than my shop vac.

If you are going to 25’+ of hard pipe, you really want to minimize flex. Like zero would be good! A foot or two isn’t going to make a great deal of difference if it’s not a tight bend. But 25’ of PVC + 10’ of cheap flex isn’t gonna work too well.

Upgrade the filter – get a Wynn 35A. Really worth while. Increases CFM, substantially better filtering. If you don’t do that, wear a respirator.

I am personally of the opinion that an air cleaner is not a substitute for a good filter on the DC, because if the fines are in the air where the air cleaner is getting them, they are also getting in your lungs. You need to get the fines out of the tool and into filtration before they can get into your lungs. No tool collector is perfect, and some dust will always escape. An air cleaner is for that dust. YMMV.

Also look at the Thien baffle, either built into a trash can separator before the HF DC or built into the DC ring. It’s a great mod that improves separation, leading to less dust in your filter and more efficient DC.


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