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Metalworking (rec.crafts.metalworking) Discuss various aspects of working with metal, such as machining, welding, metal joining, screwing, casting, hardening/tempering, blacksmithing/forging, spinning and hammer work, sheet metal work. |
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Painting Equipment
I have the standard 'touch up' spray gun (import special) that does a
very nice job on things like a 2' diameter end table or similar. Looks like this: http://www.harborfreight.com/cpi/cta...?Itemnumber=86 Holds about a half pint of paint, handles any standard sprayable paint. I also have a Paache (sp?) airbrush left over from the kid, I never do small enough stuff to bother digging it out. Pretty much brand new, might consider parting with it for reasonable $$ As for the spray booth, I helped a neighbor put together a small one for spraying pottery glazes using an air brush. Used a salvaged kitchen stove vent fan, figured it was about 300 cfm, exhausted through a very short and straight 4" line. Sounds like you would want something larger. Note that these materials were NON FLAMMABLE, I would NOT want the motor to be in the air path for flammable vapors. One thing that will reduce your air flow requirements tremendously is to make a full booth with wings that come out from the wall and start to enclose the operator. You want the opening to the room as small as reasonable. You mentioned an 80" wingspan, this would mean a 36"x96" area, you could get by with a 36" high by 48" wide window to reach in an spray with. That 12 square feet means an honest 300 cfm fan (really tiny for this application) would give you 25 feet per minute air flow through the window. A bigger fan improves things that much more. Tim Wescott wrote: (splatting this across multiple groups in hopes of finding someone who knows) The Problem: I want to set up a small paint booth for painting model airplanes. I'm cheap, so I want to start collecting equipment for it bit by bit as it comes up for sale on Craigslist &c. This will be for model airplanes, so the actual spraying will be far more intermittent than for (say) a car -- in fact, the worst-case painting job would be if a fender from a car project accidentally found it's way into the booth along with some primer (I dunno how _that_ would happen :-). I used to work at a shop with a paint booth, so I know all the procedures. But I was just a peon, and it was a long time ago, so what I _don't_ know are things like what capacity compressor do I need, do I really need an HVLP gun, what sort of exhaust fan is recommended, etc. Currently I'm only planning on using airplane dope, which is basically butyrate lacquer that's formulated to stay flexible so it won't crack when it's painted on fabric. I may eventually branch out to multi-part paints, but I doubt it -- I really like dope finishes, and I don't like the amount of hassle necessary to dodge toxicity with the fancier stuff. I'm thinking that I want to get an automotive touch-up gun (a regular- size automotive gun is way bigger than necessary). But what capacity compressor? It's looking more and more like I need something significantly bigger than what you get to go with an air nailer -- is this correct? Do I want to look for anything special (beyond explosion proof) in an exhaust fan (I have a room in mind, and am planning on just poking a hole in the wall for the fan)? Thanks. |
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