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  #16 (permalink)  
Old 10-19-2013, 05:25 PM
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LOL...Josh, your right, please don't tell me...cause I really like what I see you've done on your car...LOL. Seriously though Josh, it's a situation where we don't know what has happened and what is going to happen...and probably most important, who is reading this, not posting and thinking "I don't need a primer gun...I can just roll my primer on"..and maybe on another thread he heard read it's Okay to sand your filler with 80 grit...and didn't read further where the guy might have said that he finishes his filler in 240 grit...none of it's wrong...but, you put everything together and it's a time bomb.

Small spots on bare metal...have at it with a small brush...over filler, no way....again Josh, we just don't know how big, over what, who's reading and applying bits and pieces of information and what's going to happen next.

Ray

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Old 10-20-2013, 07:13 PM
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SPI Epoxy Tech Sheet http://www.southernpolyurethanes.com/TechManual.pdf is adamant that the metal temp should be a minimum of 65 degrees and maintained for 24 hours.

I assume that this would apply whether it is sprayed or brushed on.

If you don't have a source of temporary (24 hour) heat, you probably should not apply the SPI Epoxy.
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Old 10-20-2013, 07:25 PM
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Or other brands of Epoxy
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Old 10-21-2013, 07:35 AM
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Quote:
Originally Posted by Joelk View Post
SPI Epoxy Tech Sheet http://www.southernpolyurethanes.com/TechManual.pdf is adamant that the metal temp should be a minimum of 65 degrees and maintained for 24 hours.

I assume that this would apply whether it is sprayed or brushed on.

If you don't have a source of temporary (24 hour) heat, you probably should not apply the SPI Epoxy.
ok now that being said whats the reasoning behine the 65 deg,,,what happens if its sprayed below 65 deg,,??? just wondering
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Old 10-21-2013, 08:30 AM
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ok now that being said whats the reasoning behine the 65 deg,,,what happens if its sprayed below 65 deg,,??? just wondering
It won't cross link properly
Just get ya in a big mess down the road.
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Old 10-21-2013, 08:51 AM
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Yep, it irreversibly stops the curing process and gums up.
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Old 10-21-2013, 08:41 PM
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Had this happen to me when I first started using SPI epoxy. It was very cold temps in december when I shot it over bare metal. The very next day I just happen to scratch at it with my fingernail and it scraped right off with ease. I was a bit shocked that it had not cured. I usually run the heat on during the day then shut it down at quiting time, then turn back on in the morning. Called Barry and found out about the 65 degree deal, I ended up being very lucky as I just turned the heat way up for a couple days straight and it did cure and was fine.
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Old 10-21-2013, 11:15 PM
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I think my "painting season" here is Oregon is about done also. I try to time paint and primer work, so the sun is out, and parts can be placed in direct sunlight.

If your garage is not too big, even a small space heater can significantly raise the temp in the garage over night.

Another option is to use flood lamps to provide radiant heat on the panel you are painting. It is not the ambient temp you are worried about, it is the temperature of the panel the paint is on.
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