Seriously thinking about skipping the 8 coats of clear dope on this Playboy and going with an auto-clear finish. Of course the color coats will be Brodak dope over Polyspan and Silkspan.
Got a few questions: Is the auto paint more prone to cracking? Can plastisizer be added? My spray temps will probably be in the 50's. Is that too cold? What is a good brand or what EXACTLY should I ask for? My HVLP spray guns have a 1.4 and 1.8 nozzle. Which would be better for this type of finish? What about air pressure?
I'm sure I'll think of more questions. Thanks in advance.
8 coats Clint!!!!? I seldom use more then 2.
Keep in mind this clear does not "dry" ,, well it does dry, but that's not what gives it any strength, it has to cross link chemically which occurs as a result of the chemical reaction. I have seen Randy's stuff, and he does good,, the Omni is a slightly higher Acrylic content, which for production car work isn't the best thing, but on our planes it just happens to be a good thing as it renders it slightly more flexible. It is also cheaper than the clear I use. Randy, well, I would strongly recommend longer than 6 hours, but at least that's better than none. Tho other caution is that when you bring it in from the cold after spraying it, it can move again on you, in other words runs,, If you have it on a paint stand you can rotate it every once in a while to chase the run back over itself.
Health effects of isocyanate exposure include irritation of skin and mucous membranes, chest tightness, and difficult breathing. Isocyanates include compounds classified as potential human carcinogens and known to cause cancer in animals. The main effects of hazardous exposures are occupational asthma and other lung problems, as well as irritation of the eyes, nose, throat, and skin.
Isocyanates are powerful irritants to the mucous membranes of the eyes and gastrointestinal and respiratory tracts. Direct skin contact can also cause marked inflammation. Isocyanates can also sensitize workers, making them subject to severe asthma attacks if they are exposed again. Death from severe asthma in some sensitized subjects has been reported. Workers potentially exposed to isocyanates who experience persistent or recurring eye irritation, nasal congestion, dry or sore throat, cold-like symptoms, cough, shortness of breath, wheezing, or chest tightness should see a physician knowledgeable in work-related health problems.
the amount of time you have been a professional painter, I have been a professional Industrial Hygienist. I do occupational health and safety professionally. And am certified in both areas, ie CIH and CSP.
>>The problem is, many of those sources state that it is toxic, but without any toxicity data. <<
Well, pop a can open, stick your nose in and take a deep breath. Trust me, you get all the data you need.
OK, that was snotty. Sorry. But I think the point was to not to soft pedal the dangers. This stuff ain't lacquer. I'm probably a bit touchier than most about this because I AM sensitized. I had one exposure (first time using it) that put me in the hospital on a ventilator and have had to be very careful of the stuff since then.
One point I find interesting. You said earlier that there was no filter based mask that was effective with iso-cynates. I talked to a 3M rep that said that they did have filters that worked with the stuff. I'd probably take your word over his, but I think it's interesting that 3M would say this.
DANGER! HARMFUL OR FATAL IF SWALLOWED. HARMFUL IF INHALED OR ABSORBED THROUGH SKIN. AFFECTS CENTRAL NERVOUS SYSTEM. CAUSES IRRITATION TO SKIN, EYES AND RESPIRATORY TRACT.
Causes irritation to the nose and throat. Concentrations above the TLV may cause headache, dizziness, nausea, shortness of breath, and vomiting. Higher concentrations may cause central nervous system depression and unconsciousness.
May be absorbed through the skin with possible systemic effects.
Chronic exposure may cause central nervous system effects.
Persons with pre-existing skin disorders or eye problems or impaired respiratory function may be more susceptible to the effects of the substance.
Has shown teratogenic effects in laboratory animals.
WE WANT YOU ON OUR SAFETY WALL..WE NEED YOU ON OUR SAFETY WALL...