LumberJocks

For those of you with a Wynn Filter and some kind of separator/cyclone for your DC

  • Advertise with us

« back to Focus on the Workspace forum

Forum topic by CharlesA posted 10-26-2014 06:14 AM 1760 views 1 time favorited 30 replies Add to Favorites Watch
View CharlesA's profile

CharlesA

3018 posts in 1258 days


10-26-2014 06:14 AM

Topic tags/keywords: question separator dust collection dust cyclone clearvue oneida dust deputy

Why not just set up the DC exhaust outside and avoid the need for $200 filter?

I have my DC setup with a good ducting system, etc., but I’m concerned by Bill Pentz’s warning that it’s the dust I can’t see that is the most dangerous. I wear a 3M 7500 series mask when using ROS and hand sanding, but certainly not when using every power tool.

I have a 1 micron bag and a dropbox separator—the separator catches the vast majority of my dust/chips. I’ve considered everything from a Clearvue CV1800 cyclone and Wynn filter ($650 total) on down.

The simplest idea seems to be to cut a 5” hole in my garage wall and exhaust the finer dust outside. I don’t have AC at all and very little heat, and I have the garage door open 90% of the time I’m in the shop.

Since I have the separator, I won’t be putting out that much dust. And since I’m sending the finer dust outside, I don’t see the need to upgrade my separator/cyclone. This seems like the most effective and cheapest solution.

What am I overlooking?

-- "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


30 replies so far

View timbertailor's profile

timbertailor

1591 posts in 884 days


#1 posted 10-26-2014 08:36 AM

If you can get away with it, exhausting outside is definitely more cost effective.

-- Brad, Texas, https://www.youtube.com/user/tonkatoytruck/feed

View Redoak49's profile (online now)

Redoak49

1937 posts in 1449 days


#2 posted 10-26-2014 11:29 AM

I looked at your shop and it appears that you have done a good job of collecting dust at the source. If you vent the dust outside, are you creating a dust problem in an area which could cause you or others problems. The dust will probably coat everything in the area and if people walk through it will kick up a cloud of dust. Also, the wind could carry the dust everywhere.

The Clearvue cyclone has filters that are 99.999% efficient at 0.5 microns which is very good. It is a nice setup but takes up some space and is not cheap.

Do you collect dust at the ROS. I would think that a sander probably produces more small dust particles than any other tool and collecting dust at the sander would be important.

I collect dust the dust at my ROS sanders and it helps a lot. I have a DeWalt sander and a Festool sander and connect both to a HEPA vacuum.

Another question would be which filter are you using in your 3M respirator. If you are concerned with the dust, you should be using a N100 or P100 rated filter when sanding. These are rated at getting 99.7% of dust particles while the 95 only gets 95%.

View Fred Hargis's profile

Fred Hargis

3927 posts in 1953 days


#3 posted 10-26-2014 11:48 AM

If I could exhaust outside, I’d do it in a heartbeat. It gets a little cold around here to do that, but if you’ve considered the heat/cooling impacts on your shop you haven’t overlooked anything. Well, maybe one thing: if you shop is attached to the house and contains thing like the furnace or a gas water heater you might cause a backdraft in those appliances (not good).

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

View bondogaposis's profile

bondogaposis

4023 posts in 1811 days


#4 posted 10-26-2014 12:46 PM

I’ve said this before, if you are spending money to heat your shop, blowing heated air to the outside is expensive. If you don’t heat your shop, then it is not a problem.

-- Bondo Gaposis

View CharlesA's profile

CharlesA

3018 posts in 1258 days


#5 posted 10-26-2014 02:00 PM

Thanks, everyone. I do use my shopVac with ROS, but I’m probably going to be constructing a downdraft table to help even more and for hand sanding. I have the P100 filters for the mask.

Redoak49, you said, “The dust will probably coat everything in the area and if people walk through it will kick up a cloud of dust. Also, the wind could carry the dust everywhere.” If this is the case, this is out. I live in the city. This is the kind of thing I’m trying to think through. Is this true? This would be ported out right next to my neighbor’s back yard, separated by a tall wooden fence. I cannot create a dust issue for my neighbor. Everything I’ve read up to this point suggested that with a separator/cyclone, that the wind would disperse the little that was left.

-- "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 Fred Hargis's profile

Fred Hargis

3927 posts in 1953 days


#6 posted 10-26-2014 02:03 PM


Everything I ve read up to this point suggested that with a separator/cyclone, that the wind would disperse the little that was left.

- CharlesA

That is true if you have a separator. The only thing going out is the finest particles, and they are so small as to be dispersed by even the lightest of breezes. Any coating that might build up around the discharge point will be quickly washed off by rain. Be aware, the discharge point may have some noise. If your neighbors are close that may also be a problem.

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

View CharlesA's profile

CharlesA

3018 posts in 1258 days


#7 posted 10-26-2014 02:07 PM

Noise: I’ve thought a bit about that. Since my shop is open when I’m using it, the noise is already pretty out there. Second, I checked with an iPhone db app—59 db inside the shop.

-- "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 CharlesA's profile

CharlesA

3018 posts in 1258 days


#8 posted 10-26-2014 02:20 PM

Anybody with experience with the exhaust outside?

-- "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 Case101's profile

Case101

107 posts in 1253 days


#9 posted 10-26-2014 02:37 PM

I too am interested in sending the output of the DC to the outside world. I have my HF DC located in the garage with piping into my shop in the basement. I did this so the fine dust would be in the garage and not in the shop. Not to mention the noise of the DC.

I have a window close enough to the DC that I could put some duct from the DC to the outside.

My question; what size duct would be recommended for the output of the DC to vent to the outside world?

I don’t want to constrict the flow of the DC, also not having a filter on the DC should also make it more efficient if the duct is of adequate size.

Thanks,

-- John, New Jersey

View timbertailor's profile

timbertailor

1591 posts in 884 days


#10 posted 10-26-2014 02:45 PM



I too am interested in sending the output of the DC to the outside world. I have my HF DC located in the garage with piping into my shop in the basement. I did this so the fine dust would be in the garage and not in the shop. Not to mention the noise of the DC.

I have a window close enough to the DC that I could put some duct from the DC to the outside.

My question; what size duct would be recommended for the output of the DC to vent to the outside world?

I don t want to constrict the flow of the DC, also not having a filter on the DC should also make it more efficient if the duct is of adequate size.

Thanks,

- Case101

Try to keep the vacuum hoses the same size as the DC output. Usually 5” or 6”. I know Wynn sells different size hoses. HF sells the 5” in a kit.

-- Brad, Texas, https://www.youtube.com/user/tonkatoytruck/feed

View CharlesA's profile

CharlesA

3018 posts in 1258 days


#11 posted 10-26-2014 03:09 PM

actually, it just occurs to me that I could exhaust it out the back of the garage instead of the side, much further away from that neighbor.

-- "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 crank49's profile

crank49

3980 posts in 2431 days


#12 posted 10-26-2014 04:01 PM

If you are not concerned by wasted energy of loosing conditioned air, or if you have “no air conditioner and little heat” then it is good economically speaking to just exhaust this air.

For what it’s worth, if any industry tried to do this it would be the legal equilavent suicide. The EPA could and would shut you down in a heartbeat, fine the crap out of you and probably destroy your business forever. They can accuse, try, and convict you without setting foot in a court.

-- Michael: Hillary has a long list of accomplishments, though most DAs would refer to them as felonies.

View shipwright's profile

shipwright

7164 posts in 2258 days


#13 posted 10-26-2014 04:10 PM

Just another thought.
Highway truck filters are the same rating as the advertised dust collector filters (merv15@99.9%) and much, much cheaper. You just need to find a physical size that will work for you.
This is my setup using them. It is a huge improvement over “the bag”.

-- Paul M ..............If God wanted us to have fiberglass boats he would have given us fibreglass trees. http://thecanadianschooloffrenchmarquetry.com/

View SCOTSMAN's profile

SCOTSMAN

5839 posts in 3045 days


#14 posted 10-26-2014 04:22 PM

Charles would you be so kind as to let me see your out of the shop project ,with a few pic’s perhaps.I have a dedicated dust extractor which I bought to use with my wood lathe but,it keeps clogging up as some of my woodchips are long and stringy. So to date it has lain unused till I figure it all out .I am currently thinking of a double container useing a rubber dust bin with a well fitting lid.But directly outside straight through the wall from the headstock/bed sounds even better, or is it ? Alistair

-- excuse my typing as I have a form of parkinsons disease

View CharlesA's profile

CharlesA

3018 posts in 1258 days


#15 posted 10-26-2014 05:06 PM

Paul, Which filter did you buy. Can one just pick them up easily?

Alistair, as soon as I have something to show, I’ll post a pic.

Michael, I figure that actual running time of my DC is 1-2 hours a week. Most of the time it is on for 30 seconds at a time (TS cut, bandsaw cut, router, etc.). Are you suggesting that this may be the wrong thing to do, even though I am not subject to regs? I’m interested in any negative consequences of outside exhaust.

-- "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

showing 1 through 15 of 30 replies

Have your say...

You must be signed in to reply.

DISCLAIMER: Any posts on LJ are posted by individuals acting in their own right and do not necessarily reflect the views of LJ. LJ will not be held liable for the actions of any user.

Latest Projects | Latest Blog Entries | Latest Forum Topics

HomeRefurbers.com