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Forum topic by schloemoe posted 01-31-2012 02:55 AM 932 views 0 times favorited 9 replies Add to Favorites Watch
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schloemoe

691 posts in 1660 days


01-31-2012 02:55 AM

Just a quick question… I just receive a H.F. dust collector thru a smokin deal . Its set up with 4” colectors leaving the unit .I have about 60’ of ridged pvc pipe that is 3” will I damage the unit if i by reducers to 3” and use that to run my perimitor. Just need to now it would be a hole lot cheaper than having to buy pipe…...thanks for reading any advise will be appreciated…....................Schloemoe

-- schloemoe, Oregon , http://www. woodrehab.blogspot.com


9 replies so far

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jack1

1947 posts in 2749 days


#1 posted 01-31-2012 03:02 AM

The 4” would work the best but, it’ll still work with the three ”. Give it a try. Shouldn’t hurt the unit any. I neck mine down to less than that for some tools…

-- jack -- ...measure once, curse twice!

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404 - Not Found

2544 posts in 1691 days


#2 posted 01-31-2012 03:06 AM

Any way you could just put in a 4” run for the thicknesser? If you took a big pass on a wide pine plank you might clog it up. Everything else should be ok.

View a1Jim's profile

a1Jim

112525 posts in 2299 days


#3 posted 01-31-2012 03:35 AM

Rick I’ve been running all of my HF dust collectors with 3” pipe for years ,no problem .

-- http://artisticwoodstudio.com Custom furniture

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Jonathan

2605 posts in 1773 days


#4 posted 01-31-2012 05:16 PM

I don’t think it’s enough to worry about, especially since you’re not running huge industrial machinery. It’s just not going to run as efficiently, although you should still be fine. You’re simply creating a bit of a pressure difference, similar to a car exhaust system, only reversed.

-- Jonathan, Denver, CO "Constructive criticism is welcome and valued as it gives me new perspectives and helps me to advance as a woodworker."

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Beginningwoodworker

13347 posts in 2395 days


#5 posted 01-31-2012 05:51 PM

I use 4’’ pipe on my dust collector with good results.

-- CJIII Future cabinetmaker

View Bertha's profile

Bertha

12951 posts in 1415 days


#6 posted 01-31-2012 06:05 PM

I think if the pipe is rigid, you’re in good shape. I run 4” flexible, so I’m probably not qualified to comment. I sure WANT to run perimeter pipe, though;)

-- My dad and I built a 65 chev pick up.I killed trannys in that thing for some reason-Hog

View Rob Drown's profile

Rob Drown

725 posts in 2555 days


#7 posted 01-31-2012 07:12 PM

3” has a cross sectional area of 7.06 in sq , 4” has 12.56 sq of cross sectional area. 4” is a lot bigger and will have less pressure drop.

-- The expectations of life depend upon diligence; the mechanic that would perfect his work must first sharpen his tools. Confucius, 经过艰苦的努力的梦想可以成真

View crank49's profile

crank49

3481 posts in 1693 days


#8 posted 02-01-2012 01:20 AM

You are going to connect a 3” line to each of the 4” connections on the fan inlet if I understand correctly?

If so, you will be fine. The fan inlet is actually a single 5” before they stuck the 4” wye on there at the factory.

Two 3” pipes will have a cross section equal to about 72% of the true fan inlet.

If you have a problem with something making too many chips and plugging the 3” line you can always put one of those trashcan separators at the source with a short length of 4” hose connected to the machine. Then the 3” pipe will only be conveying mostly air.

-- Michael :-{| “If you tell a big enough lie and tell it frequently enough, it will be believed.” ― A H

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doordude

1085 posts in 1705 days


#9 posted 02-01-2012 05:48 AM

schlomoe, it helps to get your answers right here.since you’ve got the 3” material already, a1jim says it’s ok then it’s ok. go for it

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