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  #1  
Old 10-30-2016, 05:04 PM
BigD'sRV14 BigD'sRV14 is offline
 
Join Date: Apr 2014
Location: Reno,NV
Posts: 25
Default Downdraft paint booth

Hello all. I am looking for information I saw regarding building a small downdraft paint booth with chicken wire on top. It used HVAC filters avaliable at a hardware store. thanks
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  #2  
Old 10-30-2016, 05:59 PM
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wirejock wirejock is offline
 
Join Date: Oct 2005
Location: Estes Park, CO
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Default Booth

Quote:
Originally Posted by BigD'sRV14 View Post
Hello all. I am looking for information I saw regarding building a small downdraft paint booth with chicken wire on top. It used HVAC filters avaliable at a hardware store. thanks
I built one from hobby board with a child gate as the spray table. Works great. Easy to modify and build from 1/4" ply almost any dimension. Blower is a Rule 240 bildge blower plumbed to a wall dryer vent. It's documented in my blog. Fuse page.
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  #3  
Old 10-30-2016, 06:07 PM
rv7charlie rv7charlie is offline
 
Join Date: May 2006
Location: Pocahontas MS
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Default

An old aluminum window screen works great as a spray surface, too, and small parts won't fall through.
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  #4  
Old 10-30-2016, 07:06 PM
leok leok is offline
 
Join Date: Apr 2013
Location: Clarkston, MI
Posts: 375
Default

This is the downdraft table I built. It has worked well for me.



It is a 2x4 frame wrapped with a blue tarp. The top is plastic mesh fencing. The ends have 20 inch box fans with furnace fans duct taped over them. It has the advantage of being easy to take down and store when not in use.
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  #5  
Old 10-30-2016, 07:46 PM
PilotFuse PilotFuse is offline
 
Join Date: Oct 2016
Location: Central MA
Posts: 42
Default

Quote:
Originally Posted by leok View Post
This is the downdraft table I built. It has worked well for me.



It is a 2x4 frame wrapped with a blue tarp. The top is plastic mesh fencing. The ends have 20 inch box fans with furnace fans duct taped over them. It has the advantage of being easy to take down and store when not in use.
Total newbie here. Why are the fans necessary? Ventilation?
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  #6  
Old 10-30-2016, 07:50 PM
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DaleB DaleB is offline
 
Join Date: Sep 2012
Location: Omaha, NE (KMLE)
Posts: 2,247
Default

I used a shortened fuselage shipping crate. Wire mesh on top, a furnace filter and 20" box fan screwed to the bottom. I used the cut out piece from the fan opening spaces off the floor of the box with short pieces of 2x4 to keep some of the spray out of the filter. It worked pretty well.
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  #7  
Old 10-30-2016, 07:58 PM
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wirejock wirejock is offline
 
Join Date: Oct 2005
Location: Estes Park, CO
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Default Exhaust

Quote:
Originally Posted by PilotFuse View Post
Total newbie here. Why are the fans necessary? Ventilation?
They are exhausf fans. I suggest intrinsically safe or squirrel cage. If you use box fans, use them to blow so volitile fumes are not passing through them.
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Donated 12/03/2019, plus a little extra.
RV-7A #73391, N511RV reserved (2,000+ hours)
HS SB, empennage, tanks, wings, fuse, working finishing kit
Disclaimer
I cannot be, nor will I be, held responsible if you try to do the same things I do and it does not work and/or causes you loss, injury, or even death in the process.
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  #8  
Old 10-30-2016, 09:16 PM
PilotjohnS PilotjohnS is offline
 
Join Date: Jan 2016
Location: Southwest
Posts: 1,119
Default My plan

My plan is to build a simple 4' x 2'x 2' box out of 1" pvc and 6 mil plastic tarp. I will use a 20 " box fan from walmart and hpa furnace filter. I plan to suck air down when priming then flip the fan around and blow air up thru the grate ( and filter) when drying to keep the bugs off, if needed. This will be for primer only. And i hear primer drys pretty fast. I was going to make the front to back pvc pipes removable so that i can break it down to store.
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  #9  
Old 10-31-2016, 04:53 AM
leok leok is offline
 
Join Date: Apr 2013
Location: Clarkston, MI
Posts: 375
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Quote: They are exhausf fans. I suggest intrinsically safe or squirrel cage. If you use box fans, use them to blow so volitile fumes are not passing through them.

I should have mentioned, I used Stewart Systems water based primer exclusively. No worries on flammability.
Without the fans on, overspray will come back up through the mesh contaminating the shop.
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  #10  
Old 10-31-2016, 05:55 AM
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1001001 1001001 is offline
 
Join Date: Dec 2014
Location: Just Minutes from KBVI!
Posts: 1,039
Default

Here is mine:

http://www.brunbergs.net/?p=296
http://www.brunbergs.net/?p=318

It's mostly good for small parts. You probably want a bigger surface like the 2x4 frame shown in another post above.
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