Urgent help needed - SPI Epoxy Primer not fully cured overnight - still wet in corner

B

bstrutton

New Member
I've had some SPI epoxy primer for a few years and used for several projects. This time around I am remediating some rust in the bottom corner of a windshield channel. I sprayed two wet coats 35 min apart around 1AM this morning (don't ask, lol). Garage was around 74 but did cool a bit into the 60's overnight.

I just checked it and the flat surfaces seem fairly dry though can be marred by fingernail. However in the radiused corner at the bottom of the channel where some material accumulated, it's still very soft.

The car is supposed to be going to a windshield place first thing tomorrow and I still need to base / clear it.

Any suggestions? If I needed to remove it and go a different route how would I remove that still soft epoxy primer?

Thanks for any help. I'm a bit desperate as I've had to reschedule the windshield place once already.
 
bstrutton said:
Nice and sunny here in SE Mich today so I sure will give this a try.
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If you’re in SE MI (I’m in SW MI), unless you’ve got heat in your shop it’s still way too cold to be spraying epoxy right now. Get it in the sun and hope you can get it to kick.

Or if you have infrared that will help cure it down fast too. Heat will not help epoxy cure faster but UV or infrared will.
 
Lizer said:
If you’re in SE MI (I’m in SW MI), unless you’ve got heat in your shop it’s still way too cold to be spraying epoxy right now. Get it in the sun and hope you can get it to kick.
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Yep I've got heat in the garage. The materials and car were around that temp all day yesterday before I sprayed the small section. It's baking out in the sun right now so hopefully that'll help. Didn't want to but once again rescheduled with the windshield shop to give me plenty of time to sort this out...
 
bstrutton said:
Yep I've got heat in the garage. The materials and car were around that temp all day yesterday before I sprayed the small section. It's baking out in the sun right now so hopefully that'll help. Didn't want to but once again rescheduled with the windshield shop to give me plenty of time to sort this out...
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I get the desire to keep appointments etc., but pushing it out was a good move IMO, too much pressure and too little time. A year from now it won't matter when the window was installed, but it will matter if the paint fails.
 
MJM said:
I'd be more than happy to send my wife over to help you. The hot air that comes out of her mouth could dry a desert out, in like 15 minutes.
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dude seriously, my wife did once log onto a chainsaw site just to see what we were talking about.
 
bstrutton said:
Yep I've got heat in the garage. The materials and car were around that temp all day yesterday before I sprayed the small section. It's baking out in the sun right now so hopefully that'll help. Didn't want to but once again rescheduled with the windshield shop to give me plenty of time to sort this out...
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If it’s a sunny day when you’re spraying, push it out in the sun and get the metal real warm, then roll it back in and spray it. Then push it back out into the sun. Even on a 50 degree day, full sun will get a metal panel 90 degrees.
 
Lizer said:
If it’s a sunny day when you’re spraying, push it out in the sun and get the metal real warm, then roll it back in and spray it. Then push it back out into the sun. Even on a 50 degree day, full sun will get a metal panel 90 degrees.
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Great Tip. Appreciate it.
 
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