IR heater & Outside spraying

Yes you can spray in those temperatures. Will the epoxy fail in those temperatures, yes.

Good luck,
 
If you are going to do it, test it on something small first. It would be kind of risky though. IF you were to try it, do only one panel at a time (unless you have a bank of IR heaters. Pre heat the RTS epoxy to 90-100 degrees Fahrenheit just before you spray. Get a handheld thermometer and see if the heater gets the panels get to 70 degrees. Try to fashion up something to keep the wind off of it as well.
 
If you are going to do it, test it on something small first. It would be kind of risky though. IF you were to try it, do only one panel at a time (unless you have a bank of IR heaters. Pre heat the RTS epoxy to 90-100 degrees Fahrenheit just before you spray. Get a handheld thermometer and see if the heater gets the panels get to 70 degrees. Try to fashion up something to keep the wind off of it as well.
That's absolutely a sound idea and I will experiment with this idea, however wind has no effect on metal objects. In other words, wind chill factor doesn't apply.
 
So blowing cool air on a warm piece of steel will not cool it faster than if there is no wind and the warm piece of metal simply radiated the heat until equal with the air temp? I think you are mistaken.
 
Remember too you need to keep the metal temp above 65 (min) - 70 (ideal) after you spray it for a minimum of 24 hours, otherwise it will not cure properly. If you can. putting it in the sun will help cure it and shorten the 24 hour window, Black would be the best color for this. Honestly trying to do this all outside in low temps is a very risky proposition.
 
That's absolutely a sound idea and I will experiment with this idea, however wind has no effect on metal objects. In other words, wind chill factor doesn't apply.
You are correct in that wind will not drop the temp lower than the air temp, but if the air temp is 32, it would definitely need to be out of the wind to keep the metal temp up.
 
Measuring temp. of panel with an, IR laser thermometer at 12" away.
Panel read 29°C/84°F in direct sunlight @ 13°C/55°F outside. 18°C/64°F in shade @ 13°C/55°F outside.

Also, possibly what I'd do, is bring the sprayed panel indoors to a room that's low humidity (with dehumidifier) so any change in temperature won't bring on condensation.
 
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Remember too you need to keep the metal temp above 65 (min) - 70 (ideal) after you spray it for a minimum of 24 hours, otherwise it will not cure properly. If you can. putting it in the sun will help cure it and shorten the 24 hour window...
When putting it in the sun, the panel temp. can rise quite high. So if 70 is ideal, what is the maximum temp?
 
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