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Forum topic by MichaelTT posted 05-01-2021 07:03 PM 495 views 0 times favorited 13 replies Add to Favorites Watch
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MichaelTT

50 posts in 1204 days


05-01-2021 07:03 PM

So, I scored this blower for $20, I think its the one from harbour freight :
https://www.harborfreight.com/13-gallon-industrial-portable-dust-collector-31810.html
Only have the blower, nothing else.
I am thinking to set it up with a thiem baffle I would make, and vent directly outside of the shop.
Would be mostly used with my TS ( Ridgid 4512) and occasionally the planer.

Would this work ?
Specs for the blower say 660 cfm, not sure if that’s enough ?


13 replies so far

View Fred Hargis's profile

Fred Hargis

7023 posts in 3611 days


#1 posted 05-01-2021 07:51 PM

Maybe, I’d try it and see. You won’t get anywhere near 660 CFM, but it still might meet your needs.

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

View Craftsman on the lake's profile

Craftsman on the lake

3864 posts in 4555 days


#2 posted 05-01-2021 08:46 PM

Just throwing this out. If you can vent outside your shop I’m assuming it might be in a relatively warm climate. I wish I was in one only for that reason. (I do like my snow though). Anyway, Can you put the entire unit outside, under cover somehow? That way you’d eliminate having to make a thein collector and the fine dust would all go outside like if you vented it there. Easy hook up with some pvc pipe and a couple of flexible pipe to connect.
That way you would limit the air flow loss you’d get with the baffle.

-- The smell of wood, coffee in the cup, the wife let's me do my thing, the lake is peaceful.

View RClark's profile

RClark

139 posts in 3303 days


#3 posted 05-01-2021 08:49 PM

I think it would work as long as it’s only hooked to one machine and the duct run is short.

My 2HP HF unit (converted to cyclone) is greatly impacted by long duct runs.

-- Ray

View therealSteveN's profile

therealSteveN

8009 posts in 1692 days


#4 posted 05-02-2021 03:04 AM

I used one of those for several years on my mitersaw. I still have it, and am currently close to redoing my mitersaw base. I’m giving thought to putting it back into use, something like the Rockler wall mounts.

It pulls very well, and would keep up with any one single tool without a lot of trouble, but to try to make it a “system” it’s not got enough azz.

I’d also suggest losing the cloth bag. It’s size would be perfect for a semi’s air filter flip. If you added a cyclone it would help, but still not enough to go past 2 close tools.

-- Think safe, be safe

View MichaelTT's profile

MichaelTT

50 posts in 1204 days


#5 posted 05-02-2021 01:38 PM

Thanks, therealSteveN .

I’m not looking to make a whole dust collection system. Like mentioned earlier, it will be used mostly only for the table saw, and sometimes for the planer.

No problem with losing the cloth bag, since I don’t have it anyways.. :) Only have the blower itself.

I will set it up, and see how it goes.

View misbeshavings's profile

misbeshavings

32 posts in 3762 days


#6 posted 05-07-2021 11:20 PM

I used a HF “2HP” blower modified with a Thien baffle, and exhausted through a window (including the screen) for the past 4 years or so.

It is an excellent “chip collector” – has handled my planer/jointer well, (they were short runs) and the router/tablesaw “ok” (longer runs) . It also blows only very, very fine dust through the exhaust. For a “poor man’s dust collection”, the system is hard to beat without spending a lot more money.

I just sold it, as I am going for a more robust cyclone system for health reasons. I need to capture the “fines”.

Use the least possible flexible hose and you’ll be fine. Some of the pictures I see of people using 10’ or more of flex hose are just scary.

View Knockonit's profile

Knockonit

849 posts in 1320 days


#7 posted 05-08-2021 12:07 PM

I think i’ve read every thread on here and a couple places on ’’dust collection’’ and with all the information, its overwhelming to figure out what, how big, and what again. having a new shop almost done, i’m seriously confused on what will work best for me, i’ve even gone to a couple local shops i know of and reviewed what they have and how functional it is, and still trying to keep it reasonable, my big deal is the fine dust, as i get older it tends to rub me the wrong way, lotsa info, and some while informative, can assist in making one indecisive in how to get it done,

decided to start with what i have pipe the shop all in main line of 5’’, with drops to 4’’, and then try one of more of my present stand alone units to see what will work. i’ve done all the calcs, scratched all the paper, and well, will see, cyclone is definetly a must for me, my old commercial shop was so big and the system was huge, and we had a lot of air movement, but downsizing has created doubts on what and how, so. . a little bit at a time, big issue may be i did not make my mech room large enough for the unit i may need, hmmm, dang it always go ’’larger’‘
didint follow my mantra.
happy saturday
rj in az

-- Living the dream

View Kudzupatch's profile

Kudzupatch

214 posts in 2326 days


#8 posted 05-08-2021 12:20 PM

Why do you need a Thein Baffle if you are gong to vent outside? What do you think it will accomplish?

-- Jeff Horton * Kudzu Craft skin boats* www.kudzucraft.com

View Craftsman on the lake's profile

Craftsman on the lake

3864 posts in 4555 days


#9 posted 05-08-2021 12:26 PM



Why do you need a Thein Baffle if you are gong to vent outside? What do you think it will accomplish?

- Kudzupatch

Not my comment but the baffle will collect the sawdus/chips. Venting outside is where the fine dust goes after the sawdust has been collected. Otherwise you’d need something like a winn filter. Collecting chips is never an problem/issue. It’s the dust that escapes from the bag afterwards that is the issue.

-- The smell of wood, coffee in the cup, the wife let's me do my thing, the lake is peaceful.

View MichaelTT's profile

MichaelTT

50 posts in 1204 days


#10 posted 05-08-2021 01:12 PM

Right…
Also, just blowing all the sawdust & chips outside into the surroundings probably wouldn’t go over well with the neighbours….

View Fred Hargis's profile

Fred Hargis

7023 posts in 3611 days


#11 posted 05-08-2021 01:31 PM

It would be a colossal mess without a separator, for sure.

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

View misbeshavings's profile

misbeshavings

32 posts in 3762 days


#12 posted 05-08-2021 03:24 PM


Right…
Also, just blowing all the sawdust & chips outside into the surroundings probably wouldn t go over well with the neighbours….

- MichaelTT

@Craftsman on the Lake has it right. The thien baffle captures well over 95% of everything, and 99+% of chips. As I said, I exhausted through a window screen, and there is nothing visible outside or in. The only thing being vented outside are the fines that the separator missed. Probably the most annoying “pollution” is the noise from the blower being vented. If I could vent a large cyclone outside I would, but I sucked in enough humidity as it was with the smaller HF, so I’m going with a closed system. For a larger system vented out, I would at least baffle a bit to send the noise “down” rather than “out” for the neighbors.

View AlanWS's profile

AlanWS

141 posts in 4676 days


#13 posted 05-12-2021 04:15 PM

If you only want to capture big stuff that could hit the impeller, and let the little stuff go outside, make your cyclone (a Thien baffle is a sort of cyclone) larger in diameter. The smaller diameter it is, the more flow resistance it adds (because it takes more acceleration to divert the flow to a smaller circle).

You may even find it enough to use a drop box that does not have the circular flow of a cyclone. This captures only very large stuff, but costs even less flow.

-- Alan in Wisconsin

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