(10-19-2022, 02:23 PM)davco Wrote: Looking for a decent quality cyclone dust collector in the 2-3HP range that will readily
adapt to venting outside and won't break the bank ($750 - <=$2K).
What recommendations do you guys have?
I am in the process of assembling a ClearVue Cyclone that vents outside. I have done a lot of research, but since it's not running yet, my practical experience is lacking. Anyway, here's my research summary.
The best forum for dust collection is in Australia:
https://www.woodworkforums.com/f200 In particular there is an active member there named BobL who worked in clean room technology at a university and has a wealth of knowledge. Most of what I have learned is from that forum. It's much easier to digest than Bill Pentz.
Often the most inexpensive way to improve the air quality in your shop is through ventilation. You want fans at one end and inlet at the other end with as few dead spots as possible. Most of the fans are far too optimistic in their ratings, so target 20 air changes an hour. Centrifugal fans work better than axial fans.
For duct work, you want 6", either metal or PVC. Don't assume PVC is cheaper.
That forum has a lot of details on how to modify a 2HP dust collector to work better:
https://www.woodworkforums.com/f200/gene...-dc-171247 Even after all the work, it won't be great, but venting outside covers a lot of sins.
Cyclones rob a lot of static pressure from the system, so effective cyclones start in the 4-5HP range. If that's too expensive, then I would stick with a bag collector, especially since you are venting outside. Put the DC outside protected from the weather or inside an air tight closet that vents outside. You can use 30 micron bags to maximize air flow. The Powermatic PM1900 is a 3HP bag collector with a 14" impeller and 8" inlet is supposed to work well. I have seen these come up for sale on Craigslist list in my area several times. The collector needs at least a 13" impeller. Just because a collector is rated for 3 HP, if the impeller is small or the inlet is restricted, the HP is wasted. My impression is that the Powermatic would be roughly equivalent in power to a ClearVue Cyclone.
In your pricing consider duct work because it often costs as much as the collector, sometimes more. In the used market, look for people who setup their entire shop and then have to move. Now they have all this duct work to disassemble, which you could help with for a significant discount.
I looked and looked and looked for "simple and effective" solutions for dust collection and concluded that other than ventilation, there is no free lunch.
Good luck.
Mark