by kittyfritters » Fri May 08, 2009 1:51 pm
Testor's makes an inexpensive, all plastic, internal mix airbrush that retails at full list for about $50. You can occasionally find it for a lot less at discount stores. It comes with two nozzles, wide and detail, a paint pot, a hose, a can of CO2 propellant, and a little squeeze bulb for loading the paint pot. Two other pattern nozzles are available and you can order more paint pots. Don't let the fact that it's all plastic deter you from getting one. It has full professional airbrush capability. You just have to be careful cleaning it. I used it for some time with a modified Black and Decker tire inflator (used, freebe, 25 p.s.i. pressure regulator, an in-line gasoline filter in the hose as a water trap, and a $2.00 hose adapter) as an air compressor. My daughter gave me a Paasche airbrush compressor for Christmas, so I use that now. Much quieter!
I spray acrylics and acrylic ink with the Testor's airbrush and clean with water, but others have told me that they spray dope with it and clean it with dope thinner without damaging it. Windex, as thinner, serves the same purpose as the variously named "surface tension reliever" or "surface tension killer" that is sold in art supply stores for spraying the ink. You use only a drop of surface tension killer in a paint pot. I have a suspicion that it is nothing more than a strong detergent.
I find that thinning acrylics with rubbing alcohol works very well. Rubbing alcohol is 30 percent water, 70 percent isopropyl alcohol. I also use it for shrinking tissue when I "dry cover". I fix my tissue with Krylon Crystal Clear (#1303). The load of water in thinned acrylics causes tissue fixed with Krylon to sag, but it tightens right back up when dry. Be careful that masking of adjacent areas is tight when spraying on tissue or any overspray hitting the temporary sag can cause painted on wrinkles. With alcohol thinning, out in the garage on a warm day, the tissue will be dry and tight almost before you put the airbrush down.
Airbrushing certainly is fast! you will definitely spend far more time masking than spraying. I use friskit (clear, low tack airbrush masking film available in art supply stores) for some masking. For most of it I use domestic tissue, sprayed with a couple of coats of Krylon, and attached with a 3M Repositionable Glue Stick (Post-It note glue). The tissue works very well, is cheap, and is a good use for the tissue that comes in the Guillow's kits. (Credit Orv Olm for that trick.)
Gentlemen, let us spray!