Under catalyzed filler

A

aviator8

Promoted Users
Last night I spread some rage ultra xtra over some panels. I think I under catalyzed a batch as some sections done together are still not hardened off. I stuck it out in the sun. Question is will it eventually harden, or have I got a mess to deal with?
 
UGGH, was hoping yall would say, dont worry it will harden up. OK I'll scrap it back off. This was my inital skim coat, SPI epoxy underneath that was spayed 7 dyas ago now. Any issue using a solvent to get the last residue off after scraping? If so which one is safe, laquer thinner, 700, 701?
 
You might rub some of the cream hardner on It to help remove it. Never had that issue but hey,what have you got to lose.
 
I got most of it scraped down. Trying not to destroy the epoxy underneath. Scraped through in a few spots. If I can clean the residue off with a solvent I can give it a go with the DA and reshoot another epoxy coat wait and try again, this time weighing it 50:1 rather than using my clearly uncalibrated eyeballs. Just unsure which solvent would work and not mess up the epoxy base sprayed last week
 
I had this happen to me last year using out dated filler and hardener. I scraped the bad filler off with a putty knife and wiped the residue off with lacquer thinner. Blew it dry with compressed air and let it sit for a day.
 
I used this filler on my doors with no issue, I did mix half and half xtra with ultra though. This batch was xtra only , One batch I did is hard this one didn't set. I'm sure it was me. So lacquer thinner did not eat into your epoxy? Thats my only real concern.
 
aviator8 said:
I used this filler on my doors with no issue, I did mix half and half xtra with ultra though. This batch was xtra only , One batch I did is hard this one didn't set. I'm sure it was me. So lacquer thinner did not eat into your epoxy? Thats my only real concern.
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No damage to the existing epoxy.
 
MJM said:
No damage to the existing epoxy.
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I did some digging here and found reducer is safe so I gave that a try. First I scraped, then I wet out with W&G 700 since I knew that to be safe. That softened it a bit and I was able to run a razor over it and remove 98%. The reducer cut the rest of the sticky glazing left off quickly. Guess I need to sand and reshoot and give this another go. Thanks
 
Chris_Hamilton said:
Re-think using so much X-tra as well. Roughly 3 parts Ultra to 1 part Xtra would be as much as you will need to give you time to spread it. Especially when temps are in the 70's or cooler.
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I just figured, Im slow, and in no rush to get it on and get sanding same day so why not use all the open time I can.
 
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