Dust collector specs question.

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Forum topic by Betsy posted 05-05-2009 04:42 AM 1224 views 0 times favorited 7 replies Add to Favorites Watch
View Betsy's profile


3392 posts in 4135 days

05-05-2009 04:42 AM

I am in desperate need for a new dust collector. The motor is about as creaky as my knees and it just can’t keep up any longer. So I’m searching the net. I was looking at the Jets and one thing has given me a question. What do they mean by “Single stage design for economical, quiet operation?”

All thoughts welcome.

-- "Our past judges our present." JFK - 1962; American Heritage Magazine

7 replies so far

View PurpLev's profile


8548 posts in 3888 days

#1 posted 05-05-2009 04:48 AM

read: it’s less powerful, and not as good as the 2 stage motors (2HP+ 220v) – but hey – we can use that as a selling point, since it also makes less noise than the bigger motors, and costs less….

Edit : I merely refer to the questioned sentence’s meaning… I do not have any negative views of single state DCs – I own one, and think it’s great! if you don’t have 220v available, and don’t have 1K+ to invest in a collector + ducting, the single state are the only solution, and depending on your way of using them (one machine at a time, or smaller permanent runs) and their strength, they are of great value!

-- ㊍ When in doubt - There is no doubt - Go the safer route.

View pauldeo's profile


18 posts in 3565 days

#2 posted 05-05-2009 05:04 AM

My 2 cents is this, for a good, economical, DC, look at Harbor Freight. I have heard a few people say they had problems, but I use my DC from Central Machinery everyday, and have had no problems. it is a 2 HP unit which will keep up with 2 smaller machines, such as a bandsaw and router table, and will adequately handle a shaper, tablesaw, jointer or planer one at a time. I think they are on sale now for 179.

View a1Jim's profile


117417 posts in 3816 days

#3 posted 05-05-2009 05:09 AM

Well I owned a 2 stage Oneida and never got it installed sold it because I was moving and now own 3 cheepie harbor freight dust collectors rated by them at 1800 cfm. I just own 3 because there cheep and I run 1 for my table saw , one for my jointer,one for every thing else . I have two mounted out side so catching 1mil dust is not and issue . I bought each one for $200 or less on sale. They have been in place more than 5 years and work fine. I never would have guessed they would be this good and last this long since I have been pretty pickie about the tools I buy.

-- wood crafting & woodworking classes

View pickles's profile


68 posts in 3653 days

#4 posted 05-05-2009 05:34 AM

Betsy, not sure what your budget is but I played around with several bag (single stage) dust collectors and found that they are a pain to empty and a pain to reassemble. Also, the inexpensive ones are chip collectors not dust collectors and become inefficient when dust accumulates. I made my own cyclone based on Bill Pentz’s design and it is unbelievably powerful and easy to empty. I found a woodtek 3 hp dust collector on cragslist for $150 for my motor and impeller. Probably spent $700 total on stystem with duct work (i have friends who work in construction) and wouldn’t ever go back.

View Durnik150's profile


647 posts in 3561 days

#5 posted 05-05-2009 06:02 AM

Betsy, A single stage basically send all of the material it collects to the collector. There is no separation of bigger pieces from the finer particles. The drawback is that your filter bag (usually 5 micron but I recommend a 1 micron) is exposed to all of the material coming in. I got a single stage Delta 50-760 on sale at Rockler for $349. Keep in mind you will also spend a pretty penny on all the hoses, blast gates, etc. I’d say I put about $600 total before modifying it (below) to a 2 stage.
A 2 stage collector sends the airflow through a container where the larger pieces drop into a bin or trash can. This way the filter only has to deal with the finer particles it was designed to filter.
You can turn your single stage into a two stage by sending the air through a cetrifugal lid mounted on a trash can. The big particles fall and the finer ones move on to the DC. The lids usually run around 30-40 dollars and you have to buy a metal trash can to mount it on ($20?). Don’t get a plastic one or it will collapse under the vacuum.
I hope that helps.

-- Behind the Bark is a lot of Heartwood----Charles, Centennial, CO

View Betsy's profile


3392 posts in 4135 days

#6 posted 05-05-2009 03:01 PM

Thanks guys. Pickles – you sound quite handy with things like that. Not sure I could make my own DC though. Sounds like a two stage would be best. Durnik – your explanation is great. I’ve seen those lids and have not paid much attention to them as I was not sure what they were. Now I know.

I’m going to have to get one this week as when I went in from the shop last night – it became painfully obvious that my current one is not doing the trick. The thick layer of dust on the furniture made it clear enough. Can’t imagine what I’ve been breathing in.

Thanks for the help guys.

-- "Our past judges our present." JFK - 1962; American Heritage Magazine

View BlankMan's profile


1490 posts in 3592 days

#7 posted 05-05-2009 09:28 PM

PM sent.

-- -Curt, Milwaukee, WI

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