I'll attempt to answer all the questions I have received in response to my comments about hydrocoating. Remember though, I'm just reporting my observations so you must remember I'm no expert. Your results may differ from mine given the numerous variables in any photographic procedure. Anyway, HVLP is an acronym for "High Volume, Low Pressure. " Mine is not an expensive one but you can pay hundreds for a really good one. I think I paid a hundred or a hundred and a half for mine. The paint gun has a plastic bottle which mounts vertically on the gun and the material being used is fed by gravity. I use only Epson Enhanced Matte and I use from 8x10 to 13 x19 sheets. Unlike using a meyer rod, you can coat any size without difficulty. I cut a piece of cardboard exactly the same size of the print or just a tiny bit smaller. Using removable scotch tape, I make a ring of the tape about an inch or so in diameter with the sticky side out and attach the rings of tape to the back of the print. I then place the print on the cardboard so that no part of the cardboard can be seen. This assures that the cardboard can be used over and over again and the rings of tape hold the print down flat so that it doesn't curl when it is sprayed.. I've cut cardboard pieces to fit any size I normally would want to coat and use them over and over again. I place the print and cardboard backing down on some newspapers after wiping it off very carefully with a soft hankerchief. I would not try shooting vertically as my experience has shown that runs are a serious problem shooting vertically. Once my paint gun is loaded with the hydrocote, I begin spraying using a back and forth movement of arm and wrist painting the material in a smooth consistence manner from outside the print, across the print, and past it. I begin at the bottom two inches or so of the print which is closest to me and spray back and forth until I can see the print is well coated without any dry or thin areas. I then move up the print slowly repeating the procedure over and over until I get to the top of the print and see that it too is fully coated. I do this in my garage without any special preparation to the garage. I spray when the temperature is between say 55 and 75 degrees. I don't know if the temperature is critical but I imagine that at lower temperatures one might have a problem making the material flow out. Too hot and I think you could run into other problems. The prints dry to the touch in about an hour at room temperature. They are not a bit tacky. I have been allowing one week before sleeving just to be safe. I'm in the dark here so take my word with a grain of salt. I find there is almost no overspray with a HVLP and thus you save on material. At $42 a gallon, you don't want to be spraying everything in the garage, right? Since there is only nominal overspray I don't feet the need for a mask or respirator. I don't even smell the material. Forgive the lengthy post but I wanted to make sure I covered all your questions. I would much appreciate seeing your own observations after you try this and whether this post is helpful for you. I'd like to learn more. If you have any other questions, please ask. Joe
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Hydrocoating
2003-05-06 by davajonj
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