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Topic Review (Newest First)
02-27-2009 07:24 PM
deadbodyman
lookie good

looks good when your done you can build me one at the house,cant wait to see your first job,oh,dont let your niebors knowand keep your flamables in steel cabinet
02-27-2009 07:04 PM
hotrodharley
new pics of paint booth progress









02-26-2009 08:30 PM
deadbodyman
pics

Quote:
Originally Posted by deadbodyman
ill tellyou somethingyou really need to know,some of my best jobs were in homemade booths,i have a devilbis booth its main problem is not enough light on the bottom i cant see the clear very well so illdo the hood and set my speed then do sides by that speed i think it needs lites a foot off the ground and end to end ill try to get pics so you can see the light positions the EXPERTS designed,there are no lites on the cieling and it doesnt need them they are in the hips though.i guess what im tring to say is you can always make changes according to YOUR needs and you can adjust your technique to make up for the short commings youll run into but i can tell youll go far cause you do your research and want things right,so get er done and lets paint some cars itll be a good one youll see. ok lets see if i can screw up these pics again
i did it ,my first time thanks guys
i
02-26-2009 08:28 PM
deadbodyman
booths

ill tellyou somethingyou really need to know,some of my best jobs were in homemade booths,i have a devilbis booth its main problem is not enough light on the bottom i cant see the clear very well so illdo the hood and set my speed then do sides by that speed i think it needs lites a foot off the ground and end to end ill try to get pics so you can see the light positions the EXPERTS designed,there are no lites on the cieling and it doesnt need them they are in the hips though.i guess what im tring to say is you can always make changes according to YOUR needs and you can adjust your technique to make up for the short commings youll run into but i can tell youll go far cause you do your research and want things right,so get er done and lets paint some cars itll be a good one youll see. ok lets see if i can screw up these pics again
02-26-2009 07:42 PM
hotrodharley
Quote:
Originally Posted by deadbodyman
cant have too much lite,
got that right..been told on another fourm that the location of lights are very important..so want to get the pro's and con's on the right locations they should be..all the factory ones don't have lights abouve but has them on side as i do and at angles on the sides at top..
02-26-2009 07:22 PM
deadbodyman
lite

cant have too much lite,
02-26-2009 07:06 PM
hotrodharley
lights

i have 4 lights on each wall..i'm getting ready to install cealing in booth and like to know what way is best?on the cealing overhead or on the side walls at top pointing at a 45* angle running length ways..?what way is best and way?
02-26-2009 05:41 AM
garyroushkolb Wow that's a serious booth- Be sure and check out the new high output lights that are being made now. They put out lots more light and at the right color for daylight appearance of the colors. Beautiful job looks like your serious about quality.
02-25-2009 10:33 PM
hotrodharley
Quote:
Originally Posted by deadbodyman
seal your doors and pressureize,the coolest booth ive used had ceramic tiles top to bottom it worked perfectly
update on my booth build..i ended up haven to build 2 4'x4' boxes to be mounting in ceiling of paint booth..each box will have 4 filters i got from the front doors of a cross flow paint booth.each box has it's own fan[squirrel cage type fan assy]came out of a 14'x70' house trailer furance.the exhaust vents you see in pic are 14"x14" and have 4 on eash wall[toal of 8 exhaust ports]
think this will work as a postive paint booth?also every seam ius being calked to make booth air tight and hoping dust free.
02-25-2009 10:18 PM
deadbodyman
itll work

Quote:
Originally Posted by hotrodharley
you sound like you are very smart about paint booths..i'm building myself one now and was wondering if you can help me with my booth?
i've decided I didn't want to paint anymore in a dirty gorge so I'm building myself a semi-downdraft paint booth.or lets say I'm trying anyway..I want the nova[war wagon] to be perfect or as close as I can get it.in pics you see the openings in walls below the light boxes?those will be exhaust[free flow--no fans sucking but will have filters over each one]on celling I'm thinking building [2] 8' boxes that will have [3] 24"x20" filters[beside each other] in each box with one fan from swamp coolers in each box..do you think this will work?
i've decided I didn't want to paint anymore in a dirty gorge so I'm building myself a semi-downdraft paint booth.or lets say I'm trying anyway...in pics you see the openings in walls below the light boxes?those will be exhaust[free flow--no fans sucking but will have filters over each one]on celling I'm thinking building [2] 8' boxes that will have [3 or 4] 24"x20" filters[beside each other] in each box with one fan from swamp cooler[squre cage] blowing into each box.[that would be 2 fans--one per each box]mounted in middle of booth on the ceiling blowing down over top of car.do you think this will work?if not then what should i do?oh ya..the paint booth size is 24'x15'x8' high
[IMG]http://i8.photobucket.com/albums/a43/hotrodharley/paintbooth006.jpg[/IMG







the top boxes i 'm talking about is going to look sort of like this
seal your doors and pressureize,the coolest booth ive used had ceramic tiles top to bottom it worked perfectly
02-25-2009 10:08 PM
deadbodyman
booth tips

alot of good info,the key is haveing more air going in than going out that way it wont be sucking dirt in through all the cracks use two or more fans in and one out ,also with the plastic youll have replace after every use,but with the smaller size it shouldnt take but a couple minutes with duct tape
02-24-2009 07:50 PM
hotrodharley
building a paint booth

Quote:
Originally Posted by boothbuilder
It is important to remember that the first function of a spray booth is to remove the overspray to prevent the formation of a combustible or explosive environment. You should really be doing a minimum of two air exchanges per minute. Thus, if your booth is 9x20x8, or 1440 cubic feet, you need to move at least 2880 CFM. Box fans are often used in homemade booths but should be considered inadequate, as they are intended to operate in a 0 static pressure environment. Curved blade fans, or squirrel cages, offer the best alternative as they can be operated over a large range of speeds and static pressures.
The key to designing a good homemade booth is to determine the airflow you require, as described above, and then build the fan and filter system to produce that flow. Filters, even light ones, greatly increase static pressure, or restrict air flow. When static pressure rises, air volume decreases. As air volume (hence mass) decreases the load on the fan motor decreases. This effect will allow you, with the help of an ammeter, to roughly determine the amount of air your fan and filter system is moving. Broadly, in the range of static pressures typically found in homemade booths, 1 horsepower will move about 1800 CFM. If you need to move3600 CFM, then a two horsepower motor should suffice. Use your ammeter to check the actual amp draw of the motor, and compare that to the Full Load Amp rating of the motor (usually listed on the motor id tag as FLA) If the motor is drawing its full load amps, then it is producing full horsepower. If the amps are low, put a larger sheave (or pulley) on the motor. Be sure to test the motors only with all filters in place, and the booth running as though you were painting.
You will need two different filter areas for your booth. First is the intake filter area. These filters provide clean air inside the booth. If you are using furnace filters, you should have 1500 square inches of filter per 1000 CFM minimum. The second set of filters are the paint arrestors. Use fiberglass filters if at all possible, as they last longer are less likely to spontaneously ignite. Use 1000 square inches per 1000 CFM. You can never have too much filter area, by the way.
If possible, use a rigid sided booth, say drywall as opposed to plastic, unless you build a positive pressure booth. The plastic creates turbulence as it flaps and shakes with the air. For the highest quality paint job, you want to maintain laminar flow throughout the spray area.
One final thought. Positive pressure booths, which have an intake fan to force air in, and then an exhaust fan to pull a little less air out are the best booths. You must balance the fans to produce a positive pressure of no more than .3 in. w.c., but that is easily done with dampers, or with the size sheaves you put on the motors. Positive pressure lessens the need to get all psychotic about sealing your doors, as you can not suck trash in from your shop. (Your a G.I., think of NBC clean rooms, or clearing your gas mask)
Hope I helped. Feel free to ask for clarification

you sound like you are very smart about paint booths..i'm building myself one now and was wondering if you can help me with my booth?
i've decided I didn't want to paint anymore in a dirty gorge so I'm building myself a semi-downdraft paint booth.or lets say I'm trying anyway..I want the nova[war wagon] to be perfect or as close as I can get it.in pics you see the openings in walls below the light boxes?those will be exhaust[free flow--no fans sucking but will have filters over each one]on celling I'm thinking building [2] 8' boxes that will have [3] 24"x20" filters[beside each other] in each box with one fan from swamp coolers in each box..do you think this will work?
i've decided I didn't want to paint anymore in a dirty gorge so I'm building myself a semi-downdraft paint booth.or lets say I'm trying anyway...in pics you see the openings in walls below the light boxes?those will be exhaust[free flow--no fans sucking but will have filters over each one]on celling I'm thinking building [2] 8' boxes that will have [3 or 4] 24"x20" filters[beside each other] in each box with one fan from swamp cooler[squre cage] blowing into each box.[that would be 2 fans--one per each box]mounted in middle of booth on the ceiling blowing down over top of car.do you think this will work?if not then what should i do?oh ya..the paint booth size is 24'x15'x8' high
[IMG]http://i8.photobucket.com/albums/a43/hotrodharley/paintbooth006.jpg[/IMG







the top boxes i 'm talking about is going to look sort of like this
11-08-2008 06:40 PM
66 Restomod
Quote:
Originally Posted by 302 Z28
Standard H&V filters will work, just don't use the cheap fiberglass looking ones, they won't stop squat. I would use some high quality 3M filters.

66Restomod, good site on your booth. I have one of those canopy's in 10 X 20, never thought about using it as a booth though

Important to use the box fans to push air in and not to use them to pull air out. Box fans have induction motors that do not produce sparks, but the switches sure do.

Vince
Thanks Vince.
You are right about both the filters and box fans. The odds of a box fan setting off an explosion is probably small but not worth chancing.
I found it was actually better to pressurize the enclosure with a positive pressure by blowing air in. That way all the incoming air must pass through the filters. If you have fans sucking air out, there will be unfiltered air leaking into the booth from cracks and seams.
I used pleated furnace filters and not the "see thru" type on the box fans. They were 6 bucks each and worth it.
Here is the link again with pictures, how we built it, tips that I learned as well as some safety considerations. Remember, Safety is No Accident...
http://chris66dad.tripod.com/id24.html
11-08-2008 05:45 PM
302 Z28 Standard H&V filters will work, just don't use the cheap fiberglass looking ones, they won't stop squat. I would use some high quality 3M filters.

66Restomod, good site on your booth. I have one of those canopy's in 10 X 20, never thought about using it as a booth though

Important to use the box fans to push air in and not to use them to pull air out. Box fans have induction motors that do not produce sparks, but the switches sure do.

Vince
11-08-2008 03:43 PM
SCHOONER
Run That FAN Thing Again 4 Me Please

Quote:
Originally Posted by Centerline
Must have missed this post.

Here's a pic of the temporary booth I built when I painted my '41. Used a wood frame and plastic sheeting. The sheeting was stapled to the ceiling and to the frame and I used duct tape to seal the plastic sheets together. Also duct taped the plastic to the floor.



I used three box fans blowing air in through furnace filters and one box fan sucking air out through a filter. This kept the booth pressurized and the dust down. Worked pretty well if I do say so myself. The doors were made using a wood frame and were covered in plastic sheeting.

Make sure you have a good fresh air supply for breathing too. You don't want to breath the iso's in modern paints because they can kill you.

Good luck.

Centerline
Hi Centerline

Nice job on the spray garage booth.

Maybe I'm 2 ol' for this stuff ~ but I don't get the filter and where you placed 'em where your fans R

Some Question(s) Please;

1. Why Furace Filters? Are they the BEST 2 use ?

2. Are Box Fans the most reasonable ones to buy ?

I want to paint my Harley and then brake-down the spray booth.

Any and all suggestions will be greatly appreciated.

THANKS CENTERLINE
GOD BLESS

Schooner
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