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Dust collection and air filtration

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Forum topic by agallant posted 01-04-2011 08:32 PM 927 views 0 times favorited 8 replies Add to Favorites Watch
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agallant

530 posts in 2349 days


01-04-2011 08:32 PM

I am a little behind the times on this one. Can someone please explain to me why you would use a 2HP dust collector over a 6.5HP shop vac? While you are at it can you explain the whole dust collector thing to me?
Also do you have an air filter in your shop?

-AG


8 replies so far

View b2rtch's profile

b2rtch

4822 posts in 2511 days


#1 posted 01-04-2011 08:41 PM

Dust collectors do not create vacuum as many people believe but they create a large air flow.
You need the large air flow and the velocity to pick up and to move the wood chips and the saw dust.

Make a search on this website about this subject and you will tons of threads treating of this subject.

-- Bert

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agallant

530 posts in 2349 days


#2 posted 01-04-2011 08:43 PM

Would I be better off using a dust collector or a shop vac on my 3hp saw?

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Paul C.

154 posts in 2708 days


#3 posted 01-04-2011 08:57 PM

Dust collector for sure. Shop vacs don’t move enough air to be good dust collectors. What you need is cubic feet per minute, not miles per hour when you are thinking about air flow. A shop vac moves a small amount of ait fast, a dust collector moves a hell of a lot more air more slowly. Does that make sense?

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agallant

530 posts in 2349 days


#4 posted 01-04-2011 08:59 PM

Yeah I am starting to understand the concept. I guess that is why every time I look at the bottom of my saw there is about 6 inches of sawdust and chips pilied up in there that I have to vacuume out.

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b2rtch

4822 posts in 2511 days


#5 posted 01-04-2011 09:01 PM

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b2rtch

4822 posts in 2511 days


#6 posted 01-04-2011 09:06 PM

agallant, read this:
http://lumberjocks.com/reviews/903#comments

-- Bert

View tedth66's profile

tedth66

458 posts in 2652 days


#7 posted 01-04-2011 10:46 PM

Yes don’t be sold on the shop vac’s HP rating ~ It’s a crock. A good 5 – 6HP shop vac can only move 90CFM of air where as a good 2HP DC can move upwards of 1100-1700 CFM. Your most demanding power tools like planers need around 600CFM to efficiently move the dust to the collector.

I remember before I had a DC I tried to use my shop vac on the planer. It was about useless and the same results were seen on my jointer.

-- Ted

View live4ever's profile

live4ever

983 posts in 2472 days


#8 posted 01-04-2011 11:49 PM

3hp saw? Did you already get your new saw AG?

-- Optimists are usually disappointed. Pessimists are either right or pleasantly surprised. I tend to be a disappointed pessimist.

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