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Venting outside vs air filter.

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Forum topic by 716 posted 12-07-2015 05:59 PM 629 views 0 times favorited 14 replies Add to Favorites Watch
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716

502 posts in 380 days


12-07-2015 05:59 PM

The main concern for the dust elimination for me is that fine dust settles on everything. This is a hobby for me and I am using my equipment maybe one day in two weeks so I am not that concerned about the health issues, maynly keeping junk in the garage free from dust cover.

Two tools that create most dust for me are table saw with an enclosed cabinet and a router on Kreg table with no cabinet, but even hand tools create enough dust to draw some smiley faces on the stuff in the garage.

I bought a HF 2HP dust collector and Jet air filter from Home Depot. I still did not unpack the filter as I have not decided whether to keep it. (I hate returning opened items unless they are defective )

I am thinking an air blower under a partially open garage gate and open door on the side of the garage could be a more effective option. It does not get cold here so freezing is not a concern.

-- It's nice!


14 replies so far

View clin's profile

clin

513 posts in 460 days


#1 posted 12-08-2015 12:50 AM

Seems to me if you’re only working 1 day every 2 weeks, and your climate is mild, I’d try to move as much fresh air through the shop as possible. Carrying the dust outside. I strategically placed fan or two could do this.

I have a Jet filter, while it clearly collects dust, plenty still settles around the shop. I only have a shop vac connected to my table saw, so my actual dust collection is pretty poor.

While an air filter like the Jet, blows a large volume of air, and therefore the exhaust speed is high, like any air mover, the air speeds on the intake side are rather low. This is just due to the fact that an air inlet draws air from all directions. The point is the overall air circulation speed slows enough as the air comes around to the intake side, that some the particles can fall out of the air before getting sucked in. This is going to be true of any air circulation, not a problem specific to a Jet air filter.

Point is, don’t expect miracles from the Jet filter system.

Since you work infrequently, rather than put money into a filter system, maybe put it towards a really good mobile base for your table saw. Something you can just lift up with a foot pump and lower again. Then just roll the thing into your driveway.

I have a Saw Stop PCS with ICS mobile base, while it weighs over 400 lbs, it rolls really easy. So easy that it will roll on its own due to the slope built into my garage floor.

Anyway, just something to consider.

-- Clin

View toddbeaulieu's profile

toddbeaulieu

781 posts in 2468 days


#2 posted 12-08-2015 07:21 PM

For the router table I couldn’t imagine running it without DC to remove the chips. A 2HP DC is bare minimum IMO. My vote would be to keep the DC as it will help you now and with future needs.

View 716's profile

716

502 posts in 380 days


#3 posted 12-08-2015 07:45 PM

No question about the DC, I was referring to the air cleaner. I imagined that I can roll up the garage door about a foot or so. close the gap with something that has opening just for a fan, which would be much cheaper and have two three times performance of the air filter. I can open a door on the side of the garage and have a constant draft above the floor so the fine dust will be flown out just before setting on the floor.
The larger visible dust should be caught by the dust collector.
Not sure if that would cause any inconvenience to the immediate neighbor. Probably not much as it is always breezy here so the dust should be carried away.
The average outside temperature here is about 75F in summer and 70F in winter so no much inconvenience from the weather extremes.

-- It's nice!

View AZWoody's profile

AZWoody

693 posts in 688 days


#4 posted 12-08-2015 07:50 PM

I think venting outside in that manner is much more effective than using an air cleaner.

I’m lucky, that in my shop, I have a good breeze that blows in a door on one end and out the large roll up door on the other side so I can get good airflow.
If no breeze, I just set up a large fan that I got from Harbor Freight and it really moves a lot of air.

I wouldn’t think the dust made will be a problem to the neighbors as it will dissipate rather quickly. The only thing that may bother them is noise from the shop machinery but even then, that’s only if you have a cranky neighbor.

View CharlesA's profile

CharlesA

3022 posts in 1261 days


#5 posted 12-08-2015 07:58 PM

I vent outside and have a window and garage door 90% of the time. Works pretty well. I use a Thien baffle and the amount of dust that goes outside is negligible—a lot less than I imagined. There is no discernible build up after a year or more, and I can see a bit on the fence crossbars, but maybe 1/4’ in a years time.

-- "Man is the only animal which devours his own, for I can apply no milder term to the general prey of the rich on the poor." ~Thomas Jefferson

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716

502 posts in 380 days


#6 posted 12-08-2015 08:53 PM

There is no discernible build up after a year or more, and I can see a bit on the fence crossbars, but maybe 1/4 in a years time.
- CharlesA

That is actually a lot. Imagine you find 1/4” dust build up on your window frame from the dust coming out of your neighbor’s garage.

-- It's nice!

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CharlesA

3022 posts in 1261 days


#7 posted 12-08-2015 08:56 PM


There is no discernible build up after a year or more, and I can see a bit on the fence crossbars, but maybe 1/4 in a years time.
- CharlesA

That is actually a lot. Imagine you find 1/4” dust build up on your window frame from the dust coming out of your neighbor s garage.

- 716

I have a fend about 2.5’ behind the garage—so this is 1/4 on a 1.5” rail It catches pretty much anything that doesn’t dissipate in the air. There is no discernible build-up on the ground. That seems reasonable to me.

-- "Man is the only animal which devours his own, for I can apply no milder term to the general prey of the rich on the poor." ~Thomas Jefferson

View 716's profile

716

502 posts in 380 days


#8 posted 12-08-2015 09:04 PM

I have a fend about 2.5 behind the garage—so this is 1/4 on a 1.5” rail It catches pretty much anything that doesn t dissipate in the air. There is no discernible build-up on the ground. That seems reasonable to me.
- CharlesA

OK, you persuaded me. So the air filer goes back to HD. I am glad I did not open the box. It’s pity I got it with a 30% off on Black Friday and have to part with it :’-o.

So do you use forced air or just let the natural breeze do the work ? Last time I worked on the driveway with the garage door open a blast of moderate wind blew much of the dust into the garage.

-- It's nice!

View AZWoody's profile

AZWoody

693 posts in 688 days


#9 posted 12-08-2015 09:11 PM

Does your HD normally stock Jet air filters? I’ve never seen one in anything other than a woodworking store.

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CharlesA

3022 posts in 1261 days


#10 posted 12-08-2015 09:16 PM

When I had a simpler separator, I used to push 10% out and it piled up. The Thien is efficient enough that for 6 months I didn’t notice any. Now just a little.

-- "Man is the only animal which devours his own, for I can apply no milder term to the general prey of the rich on the poor." ~Thomas Jefferson

View nkawtg's profile

nkawtg

204 posts in 715 days


#11 posted 12-08-2015 09:30 PM

How would I port this to the outside?

View 716's profile

716

502 posts in 380 days


#12 posted 12-08-2015 09:36 PM

1. Open the garage door.
2. Roll the DC out
3. Attach the hose to both DC and the tool you are using.
4. Partially close the door making sure you do not crash the hose.
5. It is outside.

-- It's nice!

View Tennessee's profile

Tennessee

2410 posts in 1978 days


#13 posted 12-08-2015 10:54 PM

My shop is little, about 11’ by 24’. One end is a big garage door. I also have a man door about three feet up from the garage door on one wall. The other end where I do most of my work is at the “dead” end, but has a window with an air conditioner in it, so it never gets opened.

I use two overhead powered filters from Grizzly, and whenever possible, I open the garage door and turn on two 20” fans mounted in the ceiling, (one in on one side, one out on the other), creating a circle of air in and out. I work in my shop at least five days a week, usually 3-6 hours a day.

My worst times are in the winter, when I cannot open the garage door. I often have resorted to just masking up. There is a definite layer of that fine permanent dust on just about everything, despite my blowing down the shop regularly, and using the fans and the ceiling filters.

I am 66 and have been in woodworking for about 45 years. Sold my first commissioned piece in 1971 in Norfolk, VA.

I still can take a deep breath on will, and rarely suffer any allergies and have no problems breathing. I don’t smoke. I do worry that one day it will all catch up with me and I will get some kind of COPD, but to date, my doctor says I have healthy lungs, my blood pressure is low, and other critical measurements are all excellent for a man of my age.
Do I worry about dust?
Yes…
That is why I own two MSA approved masks, and use them anytime I think that something will be in the air that might damage my lungs. I always mask up when I clean the shop, spray any kind of finish, etc.

I don’t go overboard and put huge dust collectors on my planer, bandsaw, etc. I use Rigid 16 gallon vacuum cleaners with HEPA filters in them.
Am I playing with fire? I don’t know. I have had this particular shop since 2007, and there has been no real change in my health. As a matter of fact, I have never used a dust collector in any of my shops, as I moved about for my daytime career.

I think with the garage door open, and the fans on is a huge savior. They move hundreds of CFPM, maybe thousands, when they are on. Things hanging on the wall actually move around. To me, that is good enough. If the temps are 50’ or above the garage door is open and the fans are usually running.

My Grizzly filters take over in the winter, my toughest time. Fortunately, here in SE Tennessee that is only about 2.5 months.

-- Paul, Tennessee, http://www.tsunamiguitars.com

View CharlesA's profile

CharlesA

3022 posts in 1261 days


#14 posted 12-09-2015 12:17 AM

How I vent it:

-- "Man is the only animal which devours his own, for I can apply no milder term to the general prey of the rich on the poor." ~Thomas Jefferson

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