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Forum topic by jaminjames posted 11-05-2017 09:37 PM 252 views 0 times favorited 4 replies Add to Favorites Watch
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jaminjames

21 posts in 241 days


11-05-2017 09:37 PM

I just got a great deal on a barely used Fuji Q3 HVLP spray rig with lots of extras. ($250 on Craigslist, not to gloat!)

I got it to spray lacquer finish on solid bodies for electric guitars and basses. I’m going to build an 8×8x8 spray booth in my garage. The biggest issue I’m running in to is safely venting it. My whole spray both will cost less than $300 in materials, so I don’t want to spend $1000 on an explosion proof fan that is made to exhaust an entire shop.
From poking around online it seems like the squirrel cage fans are a good alternative. The only issue is that I’d need to buy and retrofit several of them to exhaust the spray booth because of the lower CFM rating on them.

My idea was to build an open faced box inside the spray booth that the guitar bodies will sit directly in front of and and I can spray into that, probably 2 feet tall, 3 feet wide, and a foot deep. The back side of this box will be furnace filters. Haven’t decided on a design, but will use some kind of chambering that the fan will be ducted to and attach to the back of the spray box, so that I can get an equal draw across the filters.

I’m thinking 90% of my overspray will be drawn in to the box. The entire booth will be around 500 cubic feet, but the spray box will only be about 6 cubic feet. The fan I’m looking at right now is rated at around 100 cfm. This clearly wont exhaust the entire booth fast enough to be completely safe, but if all my spraying happens in front of the box, I’m hoping that my booth will stay fairly clear.

Any thoughts on this plan?


4 replies so far

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richardchaos

521 posts in 213 days


#1 posted 11-05-2017 10:36 PM

Yes NO SMOKING!

-- “In a time of universal deceit, telling the truth is a revolutionary act.” ― George Orwell

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jaminjames

21 posts in 241 days


#2 posted 11-05-2017 10:51 PM



Yes NO SMOKING!

- richardchaos

I quit several years ago!

View JAAune's profile

JAAune

1769 posts in 2151 days


#3 posted 11-05-2017 11:58 PM

I hope you’re planning on using a water-based “lacquer”. Explosion-proof fans are used for solvent finishes because they won’t introduce a spark into a duct that’s full of fumes and overspray.

-- See my work at http://remmertstudios.com and http://altaredesign.com

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JAAune

1769 posts in 2151 days


#4 posted 11-06-2017 12:02 AM

Look for an explosion-proof tubeaxial fan on craigslist or eBay. That’s the standard for a commercial spray booth. I bought an entire 14’x24’ booth with lights and fan for $1,000 so there are deals out there.

-- See my work at http://remmertstudios.com and http://altaredesign.com

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