Paint issues 101, Blushing Options

[scotty b]

Just a little heads up and info for those of you painting your own cars. Today I had an issue with blushing. In all the years and all the cars I have painted this is the FIRST time I have encountered it.

As I understand it ( Rick, please correct me if I'm wrong ) what happens is on high humidity days ( today was EXTREMELY high ) you have a battle between the solvents trying to escape the paint, and the moisture in the air trying to settle. Well in the world of physics, water is heavier than the solvents so the moisture gets trapped in the clear. I have painted on high humidity days many times, on rainy days many times, on hot days many times, and on days consisting of all 3.....many times yet for some reason today it happened. One of those lovely things about this work (IMG:style_emoticons/default/dry.gif)

The solution ( for now ) was to lay on a couple more coats of clear then let the fan run for about an hour. As soon as I shit the fan down, the blushing started up again. I let the panels sit until the clear was almost setup then cut the fans on again, this seemed to work. I'll know more in the morning. If it is still there, best case I can wet sand and buff it out. Worst case, all 3 panels have to get sanded down and repainted (IMG:style_emoticons/default/headbang.gif)

What looks to be out of focus is the blushing issue. In person it has a nice rainbow look to it (IMG:style_emoticons/default/dry.gif)

[scotty b]

Nathan, if you guys had 100% humidity you lucked out. I'm pretty sure it was close to 300% down here....plus the pouring rain (IMG:style_emoticons/default/dry.gif) In fact maybe that deluge wasn't rain it was just the condensation settling down (IMG:style_emoticons/default/blink.gif) The concrete floors in the shop look like they were hosed down with water from all the moisture


The blushing was definitely in the clear. I shot the first coat and turned around to hit the hood for the second coat and saw it. Every subsequent coat I put on it went away, then came right back. Apparently turning the fan back on after the paint started to set up did the trick. I came in this morning and it looks fine now. (IMG:style_emoticons/default/confused24.gif)

[bulitt]

The blushing was definitely in the clear. I shot the first coat and turned around to hit the hood for the second coat and saw it. Every subsequent coat I put on it went away, then came right back. Apparently turning the fan back on after the paint started to set up did the trick. I came in this morning and it looks fine now. (IMG:style_emoticons/default/confused24.gif)

Rich- apparently he just went to bed (IMG:style_emoticons/default/confused24.gif) Works for me ! (IMG:style_emoticons/default/yellowsleep[1].gif)

I know that day I opened the garage doors and after about an hour everything was drenched from the moisture condensing on the cold floor and cold objects- lift, tools. 66 inside and 72 outside .