explosition proof fan

Check this out

I searched “dresdner spray booth fan” – recalling that Michael Dresdner was an expert in the finishing area…

edit: Sorry – looking at this again, it’s not gonna help much! Tells you what you already know! That you need a special fan!

-- Dorje (pronounced "door-jay"), Seattle, WA

Was the article on a booth with a small fan that was for spraying flammables? I’m probably doing more harm than good here! Just curoius if you’re looking for the plans for a standard small spray booth in addition to the fan???

-- Dorje (pronounced "door-jay"), Seattle, WA

Explosion proof motors are expensive, nature of the beast. I’m not sure you’ll find an inexpensive one unless you find it second hand.

-- Bob, Carver Massachusetts, Sawdust Maker http://www.capecodbaychallenge.org

Dorje, I pretty well know how I’m going to build the booth. I’m just looking for a source for the fan.
Yeah, that’s what I’ve found too, Bob. I’m going to make a portable booth to fit on my glue up table which is 78×44. There is a window on the back side of the table to use for the vent. The article I was talking about made the side out of 1×2’s and cardboard. That seems like it would work for what I need.

-- Thos. Angle, Owyhee Design, Oregon

Hi Tom;

When I first read your question, I immeadiately began engineering something in my head. Character flaw I guess.

I would suggest, based on not knowing any of the details you are planning, you could come up with a squirrel cage, as found in a home heating system, with the motor mounted outside the vent system. with only the shaft penetrating the duct, and a very good seal at that point, it seems the motor could mounted outside the danger zone.

I am not an engineer, and I am not recommending anything here. Just giving you some ideas.

Lee

-- by Lee A. Jesberger http://www.prowoodworkingtips.com http://www.ezee-feed.com

Lee,
I thought of building a box fan. When I was in high school the guys would build them to take to the fair to keep their steers cool. They mounted a motor on top of a wooden box and used the fan from a car. The fan was driven by a belt which ran down the front(or back) of the box to the fan. The question is; will tht suck the laquer thinner out fast enough to prevent an explosion? I suppose if the fan was on before you fired up the spray gun there would be less chance of a spark. Carleen is afraid I’ll blow the shop up. She didn’t say anythiing about me!! I think what you are describing is about how those $800 fans work.

-- Thos. Angle, Owyhee Design, Oregon

I’ve got an old stovetop exhaust fan.
As I understand the problem the fan must be sparkless and, because these are fans that are used near grease, which is highly flammable, these fans are sparkless.
If you had to buy new they are not that expensive but find a remodeler or contractor and you can probably get one for nothing.
No problems y et.

-- No piece is cut too short. It was meant for a smaller project.

Sorry to have stepped in here at all! Rookie mistake!

-- Dorje (pronounced "door-jay"), Seattle, WA

Or save the money on the fan and go waterborne. I switched over to Ultima spray lacquer after several years spraying M.C. Campbell Magnalac, in my home garage environment (probably I’m not truly rated to spray this solvent lacquer in a suburban shop environment, anyway). Tough stuff rated by the KCMA (kitchen cabinet makers association), burns in to the next coat, pre-cat lacquer and varnishes available. They have amber tinted finishes available that mimic nitrocellulose lacquers, and for maple etc. they have water-white finishes that do not yellow over time. I don’t miss the off-gassing while cureing, the stink, the concern that I’m building a fuel-air bomb – any of that and I don’t feel that I am not getting a superior finish as a trade off. Still can throw on several coats in a day, dry out of dust in a half-hour, powders without loading sandpaper too fast. I’ve had no fisheye problems, easy gun cleaning. Great stuff. Jeff Jewitt's Homestead finishes also has a great selection.

-- "Bordnerizing" perfectly good lumber for over a decade.

Doug, that might be a good solution. In the past I’ve not been happy with the waterbase except for clean up and lack of bad smell. I’ve been happiest with nitro and poly but I do spray a lot of shellac. I’ve never tried to spray poly because I’ve been told it is a mess. I saved the web sites you listed and will study them later. Thanks for the suggestion and don’t be surprised if I pick your brain on these.

-- Thos. Angle, Owyhee Design, Oregon

Dorje, you just step in anytime you feel like it your opinion is highly valued.

-- Thos. Angle, Owyhee Design, Oregon

I agree with Thos. Angle—every comment is valuable! If it is incorrect information it starts a discussion that provides the right information; if it is a beginner question, the beginners such as myself will benefit from it.

-- "Functional WoodArt" by Debbie, Canada (http://www.execulink.com/~yohan)

Hers’s something I found on FWW.

-- -** You are never to old to set another goal or to dream a new dream ****************** Dick, & Barb Cain, Hibbing, MN. http://www.woodcarvingillustrated.com/gallery/member.php?uid=3627&protype=1

This company Digikey sells a variety of fans, & there prices are reasonable. You can chat online with them if you have questions. I replaced some fans in my compost toilet last year, & saved a bundle.

They have one size 850 CFM for about $104.00, These are similar to fans used for cooling electronic equipment, so they may be explosion proof. You’d have to ask them.

-- -** You are never to old to set another goal or to dream a new dream ****************** Dick, & Barb Cain, Hibbing, MN. http://www.woodcarvingillustrated.com/gallery/member.php?uid=3627&protype=1

Thanks Dick, the FWW link just asked me to sign in but I added the other to my list to look at later today. I subscribe to FWW but don’t know if I hav access to the archives.

-- Thos. Angle, Owyhee Design, Oregon

Dick, Thos.

You have to pay the subscription to FWW.com to get this comment.

Thos,

My “Good Neighbor Tom” box I posted in my projects was finished with the Ultima Spray Lacquer. Rubs out like a dream.

-- "Bordnerizing" perfectly good lumber for over a decade.

Free Fine woodworking trial, check it out

-- -** You are never to old to set another goal or to dream a new dream ****************** Dick, & Barb Cain, Hibbing, MN. http://www.woodcarvingillustrated.com/gallery/member.php?uid=3627&protype=1

Thanks Dick

-- Thos. Angle, Owyhee Design, Oregon

Grainger.com has fans of the right size for a small booth. I looked at them, before someone gave me a little spray booth with an exp. proof fan. Nothing is inexpensive though in this area. I’ve sprayed all day with my little booth with the woodstove stoked on the other side of the shop to keep the make up air warm (winter time).

-- Mark DeCou - Kansas Flint Hill's Artisan

I’ll check it out, Mark.

-- Thos. Angle, Owyhee Design, Oregon

The lowest I’ve seen in Graingers for a tube axial fan with an external drive is $1000. Here is a hazardous location motor. Mount a fan blade and make your own.

http://www.grainger.com/Grainger/items/6K734

-- Bob, Carver Massachusetts, Sawdust Maker http://www.capecodbaychallenge.org