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Outside discharge dust collection

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Forum topic by Lifesaver2000 posted 12-01-2009 06:22 AM 1316 views 0 times favorited 6 replies Add to Favorites Watch
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Lifesaver2000

517 posts in 1765 days


12-01-2009 06:22 AM

I have been doing a bit of research on dust collection options. Everything I have seen seems to involve some type of filtration for the dust to be collected inside the shop. I am looking for something a bit simpler. I just want to have the dust sucked up from the machine, and then discharged outside. This would eliminate any worries about how fine the filtration is, since everything would be going outside. I have a stand-alone shop building and live in a rural area, so making dust and noise outside isn’t a problem.

It would seem that I just need a device with a hose in to connect to the machine, then a discharge hose to run through a hole in the wall, but so far I haven’t seen anything that didn’t incorporate some kind of filter. I might be missing something obvious (and it wouldn’t be the first time).

I had also thought I might find something that works like a device our Fire Department has that I think is called an eductor suction. A hose at high pressure connects to the device, and the water is discharged through a jet in the device, which causes it to create a suction that draws up water then pushes it on back to the truck. If something similar was available to put into a suction hose, this would move the dust without requiring the dust to actually go through the blades of the unit which, in my limited experience with shop-vacs, seems to cause rapid wear.

Thanks for any thoughts on the matter.


6 replies so far

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BlankMan

1487 posts in 2006 days


#1 posted 12-01-2009 06:37 AM

Just buy a cheap, like Harbor Freight, dust collector that has the motor/blower assembly mounted on the base which has a discharge hose that goes to the filter bag assembly and disconnect it and shoot it out the wall. Unless I’m missing something here.

I thought I’d like to do that too but with the winters here in Wisconsin I’d have to worry about heated makeup air and that I think would be costly with any decent sized blower.

But, can you post a picture of the outside around your shop say, in about a year? ;)

-- -Curt, Milwaukee, WI

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a1Jim

112087 posts in 2230 days


#2 posted 12-01-2009 06:46 AM

I do what you want with a Harbor freight dust collector. Just mount the fan up close to the outside wall and have the bag and barrel outside in a little dog house. Or if you want just let it blow outside if you don’t have neighbour it will bother. I think I saw a sale in American woodworkers last issue through Hf for $150.

-- http://artisticwoodstudio.com Custom furniture

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Lifesaver2000

517 posts in 1765 days


#3 posted 12-01-2009 06:47 AM

My shop is not heated, so that won’t be a problem. As for the dust buildup, I would figure on having the discharge dump into some type of collection bin or can, and what fine dust might build up would wash away in the rain or wind.

Another thought had been to use something like a thien separator to catch most of the big stuff, then just have the fine stuff going outside. This would still give me air without any fine dust staying inside, without the cost of replacing filters.

I see what you are talking about on the Harbor Freight unit. I wonder if that could be bought without the framework for the bags.

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BlankMan

1487 posts in 2006 days


#4 posted 12-01-2009 07:01 AM

Probably could but I have ordered parts from HF in the past, 4-6 weeks at best. So if that’s not an issue but I wonder how much you’d save and you’d probably have to order all the parts that make up the blower assembly because I doubt they list it as a subassembly. A friend had a coupon for their 2HP that sells for $299 I believe for $134,. Got it out of some magazine. Like what Jim said. I could find out if it’s still good, find a copy of that issue and you’d be good to go. It was only a month or two ago and the coupon was for quite a while but could be ended now.

Check any reasonably local Craigslist too, might be able to find a basket case whose blower is still good.

-- -Curt, Milwaukee, WI

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BlankMan

1487 posts in 2006 days


#5 posted 12-01-2009 07:19 AM

Just called my friend, he thought the coupon was good till the first of the year and was for $139.

-- -Curt, Milwaukee, WI

View doyoulikegumwood's profile

doyoulikegumwood

384 posts in 2646 days


#6 posted 12-01-2009 07:49 AM

i just picked up one of the harbor fright units with the coupon out of this months wood magazine and boy dose it suck! it sucks up wood chips. dri wall dust, small furry animals opps i think i shared to much their. but I’m in the same boat as you and am going to build a dog house for it out side my shop

-- I buy tools so i can make more money,so ican buy more tools so I can work more, to make more money, so I can buy more tool, so I can work more

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