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Dust Collection: are 2-1/2 and 2" tubes adequate for very small workshop?

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Forum topic by MSquared posted 10-25-2018 01:53 AM 2917 views 0 times favorited 32 replies Add to Favorites Watch
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MSquared

518 posts in 299 days


10-25-2018 01:53 AM

Hi all! I made an impulse buy! Found a used dust collection system (sans cyclone) for $45 at a garage sale. Clear tubing, roughly 40 ft. each of 2-1/2” and 2”. Several blast gates, Y’s and T’s, clamps, hangers, and a couple of hoses, step ups and downs of both sizes. As there were a couple of other folks looking at it, I nabbed it! I’m hoping it was a decent ‘deal’. What say you?

-- Marty, Long Island, NY


32 replies so far

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TheFridge

10858 posts in 1871 days


#1 posted 10-25-2018 02:11 AM

It’s ok. Will be good for dust. Shavings from planer or jointer may clog it.

-- Shooting down the walls of heartache. Bang bang. I am. The warrior.

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MSquared

518 posts in 299 days


#2 posted 10-25-2018 02:45 AM

Thanks Fridge. Well, I don’t own a planer or jointer yet. So, it’s a start. I suppose when I require more cfm for those two machines, I’ll go with a wider, more direct route to the cyc/vac. Is an Oneida Dust Deputy sufficient overall, IYO?

-- Marty, Long Island, NY

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AlaskaGuy

5271 posts in 2694 days


#3 posted 10-25-2018 02:59 AM

If you work with Alder it will be fine.

-- Alaskan's for Global warming!

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lumbering_on

578 posts in 875 days


#4 posted 10-25-2018 03:01 AM

I’m a little confused. Is this a DC or is it a shop vac setup? The 40’ with the gates sounds like you’re using DC, but the Dust Deputy is for a shop vac, unless I’m missing something.

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lumbering_on

578 posts in 875 days


#5 posted 10-25-2018 03:04 AM



If you work with Alder it will be fine.

- AlaskaGuy

True, Alder dust is used to treat asthma.

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MSquared

518 posts in 299 days


#6 posted 10-25-2018 03:05 AM

At the moment, I only use Alder for smoking fish… and oysters. Until, that is, I get get good enough at woodworking to do it justice.

-- Marty, Long Island, NY

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MSquared

518 posts in 299 days


#7 posted 10-25-2018 03:08 AM

DC using a shop vac with cyclone.

-- Marty, Long Island, NY

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lumbering_on

578 posts in 875 days


#8 posted 10-25-2018 03:20 AM



DC using a shop vac.

- MSquared

You’ll likely find that you won’t be able to run a 40’ system like that off of a shop vac as it’s not meant for that. A shop vac uses high static pressure, but little air flow, while a dust collector uses a lot of CFM. Wood did a good article on how to calculate the CFM required in a shop.

https://www.woodmagazine.com/figure-dust-collection-needs-by-the-numbers

IIRC, even the most powerful shop vacs produce something like 200 CFM at the top end, but you should check into it.

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Mosquito

9756 posts in 2677 days


#9 posted 10-25-2018 03:29 AM

I would probably shy away from 40’ runs with a shop vac if it were me, unless it’s a ridiculously good shop vac. I used a shop vac + dust deputy for a while for my bandsaw, table saw, miter saw, and radial arm saw. It was a bit under powered for the RAS, but for everything else it did alright. I agree with Fridge, jointer and/or planer shavings clogged the 2-1/2” hose up pretty good. Same with lathe shavings

-- Mos - Twin Cities, MN - http://www.youtube.com/MosquitoMods - http://www.TheModsquito.com

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MSquared

518 posts in 299 days


#10 posted 10-25-2018 03:34 AM

Ah! Thanks, Lumbering. I’m here for an education and I’m getting one! I’m the confused one.

-- Marty, Long Island, NY

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MSquared

518 posts in 299 days


#11 posted 10-25-2018 03:47 AM

Mosquito, I’ll be using more like 20’ of what I have for main run in the 2-1/2” tubing. Apparently, mainly for sanding and the machines you mentioned. I’m at the very beginning stages of setting up a very small garage shop. Thanks for the input, it’s greatly appreciated!

-- Marty, Long Island, NY

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WoodenDreams

601 posts in 296 days


#12 posted 10-25-2018 04:26 AM

Used it’s a deal, depending on your plans. What was the reason for selling them, did they change to 4”,5” or 6” system. or did they stop woodworking. I do like the idea of clear tubing. With several blast gates, junctions, and longer hoses the more air volume you need. The maximum I run my 2 1/2” hoses is 20’, but I run the hoses direct with no blast gates. If you split the hoses a couple different directions just down one wall with Y,T, or blast gates, you might be ok.. I have no problems with shavings using 2 1/2” hose with my planer or jointer with my HF system once I removed both the grid screens it came with. Plus what are you hooking this up to. The volume on my Craftsman 20 gallon would able to handle the 40’, but no Y, T or blast gates.

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MSquared

518 posts in 299 days


#13 posted 10-25-2018 08:16 PM

The seller is moving to a larger house and a much bigger (double area +) workshop space and adding larger machines. His new DC tubing system will need to be 4”s at least and more. My shop will be tiny in comparison with just a few basic machines to start. I’m beginning to understand the ‘why’s and wherefores’ of DC systems in more detail. Thank you all!Dreams, If I use 20’ or so of 2-1/2” it would be a lot! I’ll see how the trusty 8 Gal. Shop-Vac. handles the head end.

-- Marty, Long Island, NY

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MSquared

518 posts in 299 days


#14 posted 10-25-2018 08:25 PM

The seller is moving to a larger house and a much bigger (double area +) workshop space and adding larger machines. His new DC tubing system will need to be 4”s at least and more. My shop will be tiny in comparison with just a few basic machines to start off. I’m beginning to understand the ‘why’s and wherefores’ of DC systems in more detail. Thank you all ! Dreams, If I use 20’ or so of 2-1/2” it would be the max for the foreseeable future! I’ll see how the trusty 8 Gal. Shop-Vac handles the head end.

-- Marty, Long Island, NY

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Andybb

1908 posts in 988 days


#15 posted 10-25-2018 10:19 PM


It’s ok. Will be good for dust. Shavings from planer or jointer may clog it.

- TheFridge


+1 Absolutely. It is what I use including the 20’ hose. As stated, planer and jointer shavings usually clog it where it reduces down to 2 1/2” but they are big shavings and sweep up easily. I use a DIY cyclone. I keep the shopvac inside a plywood cabinet with casters and have my drill press, scroll saw and mortiser on top of it. The cabinet is lined with carpet padding. Very very quiet.

-- Andy - Seattle USA

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