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Forum topic by shelly_b posted 03-31-2013 10:15 AM 2527 views 1 time favorited 48 replies Add to Favorites Watch
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shelly_b

848 posts in 864 days


03-31-2013 10:15 AM

I need to run some line from my dust collector to my tools. I would like to do 4in. I can’t beleive how expensive it is! I’ve looked into PVC, and the price is alot better. What about corrugated pipe? That would be the easiest/cheapest way to go, but I wasn’t sure if the currugation would cause too much friction. I looked into HVAC ducts, but those are expensive too. Any other ideas?


48 replies so far

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StumpyNubs

6272 posts in 1547 days


#1 posted 03-31-2013 10:29 AM

In dust collection ducting there are two rules that I just made up- the smoother the better, and keep the layout simple.

PVC is popular because it is cheap and very smooth. But unless you have a powerful enough collector (the Harbor Freight singe stage unit is a good one for a good price), it won’t work. And too many sharp bends will kill your airflow too.

Corrugated hose also kills airflow, so use as little as possible.

-- It's the best woodworking show since the invention of wood... New episodes at: http://www.stumpynubs.com

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StumpyNubs

6272 posts in 1547 days


#2 posted 03-31-2013 10:34 AM

Rockler's Dust Right stuff is a really good option for some people. It is a 4” hose that stretches up to 20 feet, but them compresses into just 4 feet and fits on a neat wall rack next to your collector. The idea is you just stretch the hose to your machine and attach it via a quick slip on/off fitting. It is corrugated, but since your route to the machine is usually straight, it does a pretty good job.

What are you planning on using for a collector? All I saw was a shop vac in your Baileigh video.

-- It's the best woodworking show since the invention of wood... New episodes at: http://www.stumpynubs.com

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Mark Davisson

510 posts in 2064 days


#3 posted 03-31-2013 11:24 AM

Shelly, there is a thin-wall PVC that’s much lower priced than regular. It’s designed for sewers where there is no pressure. It’s what I used and it has worked great. It’s called DWV, but I can’t tell you what the acronym represents. 70 cents per linear foot (4-inch) as opposed to $1.20 for regular PVC. But the real savings come when buying the fittings.

The dimensions are a little different than regular 4-inch PVC or regular 4-inch dust collection fittings. Woodcraft sells a special adapter for DWV: http://www.woodcraft.com/product/2082397/31197/dwv-pvc-pipe-to-4inch-hose-dust-collection-adapter-fitting.aspx when you get to the “end of the line” and need to connect to tools.

-- I'm selfless because it feels so good!

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Howie

2656 posts in 1669 days


#4 posted 03-31-2013 11:42 AM

DWV=drain,water,vent

-- Life is good.

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SteveKnnn

66 posts in 635 days


#5 posted 03-31-2013 11:53 AM

Mark, do you glue the DWV up, or leave it has press fit to allow disassembly for clean out?

-- Steve in Richmond, VA

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Mark Davisson

510 posts in 2064 days


#6 posted 03-31-2013 11:57 AM

Steve, I used sheet metal screws at each connection – two or three – half-inch, I think. Then tape. I just used duct tape.

-- I'm selfless because it feels so good!

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Airspeed

425 posts in 648 days


#7 posted 03-31-2013 11:57 AM

I used DWV, AKA solid leech. It works great, I didn’t glue mine in case I needed to rearrange or add to it, it’s been like that for years with no issues.

-- http://smg.photobucket.com/albums/v655/aaronhero/

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Fred Hargis

2033 posts in 1239 days


#8 posted 03-31-2013 12:13 PM

Using thin wall PVC is likely to be the cheapest, and it’s also called DWV, soil pipe, and a few other things. To be sure you get the right stuff, it will have “ASTM D2729” printed on it’s side….that’s more important in the box stores where Skippy Stockboy doesn’t know the difference between PVC and galvanized. If it says amything else, it’s not what you want. This stuff is normally less than $1/ft. (4”) and the fittings must be the thin wall as well. The corrugated stuff would be worse than flex at reducing air flow, skip it as well.

-- Our village hasn't lost it's idiot, he was elected to congress.

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Monte Pittman

15450 posts in 1084 days


#9 posted 03-31-2013 12:50 PM

No corrugated, drain-waste-vent pipe works fine. Just make sure when you run it to not create any trip hazards.

-- Mother Nature created it, I just assemble it.

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History

399 posts in 728 days


#10 posted 03-31-2013 01:54 PM

First of all, what size is your Dust Collector ?

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shelly_b

848 posts in 864 days


#11 posted 03-31-2013 02:48 PM

Well, I actually just got the harbor freight a couple days ago:) I’ve been so busy I just got it together lastnight. I have the 2 1/2in flex/stretch from peachtree like the one from rockler and love it. I put it on the HF and it lost alot of suction, so it’s going back on my shop vac. It is awesome stuff, but I would rather have permanent connections, without paying the price of that stuff. I saw the DWV stuff. It’s green at lowes, so easy to tell the difference. It’s $11/10ft and the PVC was $12/10ft. It was actually the first thing I wanted to use but I was worried about it b/c it said not to use pressure, so I’m glad to hear it will work! Thanks guys! I would like to make my own blast gates, or whatever fitting I can. I know those will add up pretty quick!

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shelly_b

848 posts in 864 days


#12 posted 03-31-2013 02:49 PM

-the 2hp HF incase anyone hasn’t heard of it lol

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woodbutcherbynight

1311 posts in 1155 days


#13 posted 03-31-2013 02:49 PM

I am with SawSucker what size is the dust collector and how far do you need to go. Someone asked for help awhile back and emailed me a pic of this “shop vac” they wanted to use to hook up to 2 1/4” plastic pipe kit. This vac was a Stinger 2.5 gallon wet dry vac. Nice for the stairs and the truck and such, but for a system in the shop???

Somehow streching a 4” plastic hose across the shop to my machine like the Rockler ad sounds like an accident waiting to happen. Sure as the sun rises in the East I would trip over it. (laughing)

-- Live to tell the stories, they sound better that way.

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shelly_b

848 posts in 864 days


#14 posted 03-31-2013 02:50 PM

I have some silicone tape. It’s awesome for connections. It doesn’t have adhesive and only sticks to itself.

View Mark Davisson's profile

Mark Davisson

510 posts in 2064 days


#15 posted 03-31-2013 03:07 PM

Shelly, I’m not sure the green stuff is what you need. I’ll admit to being a little confused over what it’s called. I call it “thin wall,” but that’s not what the stores call it

Here’s a link to what I used: http://www.lowes.com/pd_24140-1814-PVC+30040++0600HC_0__?productId=3133147&Ntt=4-inch+drain+pipe&pl=1&currentURL=%3FNtt%3D4-inch%2Bdrain%2Bpipe&facetInfo= It’s $6.99 per 10 feet here, and you can get it in solid or perforated for that price.

Here’s a link to the green stuff: http://www.lowes.com/pd_24160-1814-S/M+06004++0600_0__?productId=3133159&Ntt=drain+pipe&pl=1&currentURL=%3FNtt%3Ddrain%2Bpipe&facetInfo= It’s $9.99 per 10 feet.

I wish I could explain the difference between the green and what I used, but I can’t.

Added: And don’t worry about the pressure thing – I also have the 2hp HF DC, and it isn’t even close to being powerful enough to collapse the pipe.

-- I'm selfless because it feels so good!

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