Setting in the sun?

NextGen Classics

NextGen Classics

Floor sweeper
What is everyone doing when it is 20 degrees or less for 7 months out of the year and it is advised to set the car in the sun to settle the paint and get the solvents out?Thanks
 
I have a follow up question about the exact opposite. Is it still advisable to set something in the sun when it's very hot outside, like 100+? I would imagine there's a high and low metal temp range.
 
Bright sun even at 35 degrees will help, I helped a guy in Chicago a few years back where the shop had use a low grade private label primer and 6 months later was soaking up, with only three coats of a medium solids clear, he could buff once and be safe.
Everyday the guy pulled car out in 25-40 degree sun and every morning he called so we could decide when it was finished soaking, first day guy had a heart attack (almost), second day just as bad. After 4 days nothing was changing, so we continued for about another week to be safe, shop 1500'd car and never came back.
 
Yes now 70 degrees would be best of course, car was trailer-ed home and sat in garage whole time.
 
Think of it like a greenhouse for plants. When the sun comes out it warms the inside up to a cozy temp even if it's below zero outside. The primer/clear surface is the wrap on the greenhouse and everything under it gets warm. The same could be said for the windows in your house during the winter, when the sun shines through it feels nice and warm in that spot my dogs will lay there in that spot sometimes.
 
I have parts sitting in the sun on nice winter days. Even if it's 20 degrees the sun warms the surface to around 50-60 degrees. Even warmer if a dark color. It's worth doing if you only want to rub once.

I've had other painters stop by and they think I'm off my rocker though. Unless you hang out in here nobody knows about this.
 
So guys,are you saying it is more to warm the surface?How is 50-60 degrees outside in the sun better than a 70 degree shop?Or is it getting much warmer under the "greenhouse plastic" [clear coat]than you are recording with the temp gun.Seems like there is more to the suns effect than heat yes/no?
Good discussion by the way.
 
Its not the heat, although it helps but the UV'S that draw the solvents.
One day is sun it has always been said is equal to 7-10 days in a warm shop, I do disagree with that as i think its more like 19-23 days if 70 degrees.
Think about this, in all the car manuals its says do not wax for 90 days????
First most new cars have 4-4.8 mils of paint on them from e-coat to clear,That is equal to 1.5 coats of universal on a bad day and most bake at 400 degrees but they know it takes sun to finish curing.
 
I was just mentioning the temperature as some guys have concerns about getting a part extremely cold and the cure process going dormant.
 
What is the answer to Raymonds reply? With spring/summer finally coming the outside temps will be increasing and that black epoxy sure can get hot out in the sun! What is too hot?
 
Raymond_B;n81465 said:
I have a follow up question about the exact opposite. Is it still advisable to set something in the sun when it's very hot outside, like 100+? I would imagine there's a high and low metal temp range.
Click to expand...

Key to cold or hot, is let most fresh paint cure 24 hours inside first.
urethanes are not a susceptible to cold or heat shock as the old enamels were..
I remember in early 80's snow birds would have their car painted all over in winter with acrylic enamel and then drive car to FL and paint would die as soon as they got there from the heat.
 
ksungela;n81516 said:
Does epoxy curing benefit from sitting in the sun like the U.C.?
Click to expand...

I'd like to know this also about the epoxy.

PLUS for Clear coat. My driveway runs east to west. If I push the car out of the garage for the UV rays, there will only be on one side of the car in the sun, the other side is in the shade. Does it matter? Come to think of it with my trees etc, the time the sun is actually on that part of the driveway is very limited.
No I can't simply turn the car around... no room to do that... Thanks
Danford1
 
Except for warming metal up in cold weather, this could be risky for adhesion.
 
You must log in or register to reply here.
Back
Top