bsdzine Posted February 7, 2008 Posted February 7, 2008 i'm in the process of a super detail 2 day session for my car... today i planned on re-spraying my grill then clear coating it (built up some nice rocks chips over the winter). I am using dupli color spray paint. I sanded down my grille, gave it a good wash, and let it dry in the sun on my windowsill. After only just one coat of the new paint, some areas of the grill are forming "snowflakes" - not cracking, the paint is actually raised into small bumps (think of a 'frieze' in sculpture, the art of the frieze is raised above the 'base' level), and NO i didn't overspray, I was planning on doing many light coats of this paint throughout the day. kinda looks like alot of stalactites and stalagmites on crack. the only possible thing i can think of to make the paint do this is the temperature, but it's 40 in town, and right now the sun is shining on where I am spraying (out on my balcony). once i finished spraying, i brought the grill inside to dry in the warm, semi-humid apt. i've sprayed many-a-things in cold weather (most spray is best 68-92 i believe) and never once had a problem with 'snowflaking' in the paint even on the windiest of days... maybe this paint is very sensitive... looks like i'm gonna let it dry, sand it all down again, clean it, and try again. (oh hey mods i'm not sure if this is the most appropriate forum, it was either this one or the exterior forum. sorry if you gotta move it around.) brian
bsdzine Posted February 8, 2008 Author Posted February 8, 2008 noone knows why spray paint would snowflake like this??? i'm just curious as to the problem that causes this, then the next time i spray i can make sure to negate this problem. brian
iyalla Posted February 8, 2008 Posted February 8, 2008 My guess would be the change in temp. Leave it outside the whole time to dry. You went from a cool outside to a warm inside right in the middle of drying. Keep it in one place and see if that helps.
corykg Posted February 8, 2008 Posted February 8, 2008 I had this problem before while painting a hood on an older vehicle. It think its more of a chemical reaction than temperature change. My suggestion (no guarantee) is to sand down again and then first lay down a coat of primer on the piece to be painted.
bsdzine Posted February 8, 2008 Author Posted February 8, 2008 wam! i believe it is chemical... "Contaminate on the surfaces you are spraying. It could be left over wax or left over cleaning agent. Stop. Let dry. Light sand. wipe with mineral spirits or paint thinner (same thing) let dry and then repaint. That should keep it from crackling again. Air. That's why it's important to sand down the fixture first, then wipe the sand residue off the project. A smooth, clean surface takes the paint better and seals better too." even tho i cleaned it quite well before painting..... let's see if that's the trick. brian
bsdzine Posted February 9, 2008 Author Posted February 9, 2008 ^ lol yea, well i sanded, wash, dried first, then primered... kinda silly question, but then again you know someone out there mixed up the order somehow.... it's still doing the same thing, i'm going to fully wet sand it this weekend, dry sand it again, and clean the shit out of it with thinner, and then double coat the primer.... i can't see why it's STILL doing it... maybe it's just a shitty can of spray. brian
Brady Posted February 10, 2008 Posted February 10, 2008 Actually, I'm going to go on the Temperature side of things. Usually, you should paint in at least 70 degrees and low humidity. We have the low humidity part covered here in CO, but that 70 degrees thing is probably going to have to wait another month or two. Hold off until spring. You're just going to get more chips this winter anyway. Then we can have a Grille Painting meet!
BDII Posted February 10, 2008 Posted February 10, 2008 Temperature is probably culprit. Did I sell you this grill? Try sanding it down and using a Kryon Plastic paint. you can pick it up at Walmart. When My heater broke, I painted in teh cold room and dried in a heated room. I didn't have this issue, but I used different paint stupid question, but I must ask.... did you use just water to wash it? or did you use soap... I'm not trying to insult you... I just have to ask.. Need forum help? Private Message legGTLT
pillboy Posted February 10, 2008 Posted February 10, 2008 I'm thinking a shift in the Earth's electomagnetic field. It is still ugly.
bsdzine Posted February 11, 2008 Author Posted February 11, 2008 Temperature is probably culprit. Did I sell you this grill? Try sanding it down and using a Kryon Plastic paint. you can pick it up at Walmart. When My heater broke, I painted in teh cold room and dried in a heated room. I didn't have this issue, but I used different paint stupid question, but I must ask.... did you use just water to wash it? or did you use soap... I'm not trying to insult you... I just have to ask.. haha yea you sold me this grill, it's holding up great, even took some road debris without a problem! just alot of rock chips all over it... and i washed it w/ warm water with a bit of dawn diluted into it, and used a new clean wash cloth and dried it with a new microfiber towel i picked up, then i sat it in the sun on the 'sill for a bit, and dusted it off with another clean microfiber towel.... anyways, i think the culprit was the type of spray along with the temperature. i used another black spray i had in my house, and it went on without a problem, but it's just not as glossy as the other one, so i'll end up re-spraying it all in the spring again! brian
BDII Posted February 11, 2008 Posted February 11, 2008 I use a clear coat. It helps prevent chipping and gives it a better shine Glad to hear you like it! Need forum help? Private Message legGTLT
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