I need epoxy help!

B

blazerman

I think I may have screwed up......I have a camaro I am doing, started with bare metal, 2 coats of epoxy (dried fine), filler & sand, spot in burn thrus w/ epoxy (dried fine), 1 coat poly (slick sand), rough block w/80, yesterday afternoon I spotted in burn thrus w/ 1 coat epoxy, 64 deg in shop, let set for a little over an hour and put 1 coat of slick sand on. I got off work and went to block sand tonight and when I hit epoxy it gumms up the paper and if I drag a fingernail through it it isn't totally dry. Someone please tell me I don't have to sand all of this off, I am almost there! I have heat in the shop, can I bake this stuff dry? I love all of this spi product but I fear I may have rushed this stuff.
I have attached a couple of pics, thanks in advance. epoxy 002.jpg

epoxy 007.jpg

epoxy 006.jpg
 
Give it some cure time and it will be fine. You rushed the epoxy by putting the poly on so soon and the temps didn't help. 64 degrees air temp might mean 50 degrees metal temps, does the shop cool down at all at night? Some heat cycles would help. If it was mixed right and the temps don't fall it will cure. I like to wait 8hrs/overnight before applying polyester products. I have done one coat of epoxy/one hour cure then polyester and seen the same results as you-a slower cure on the epoxy, but the jobs have held up just fine and the epoxy eventually hardens up. Epoxy likes good temps, another thing to think about is the temperature of the epoxy itself-if it was in a cold shop it takes awhile for it to warm up.
 
Thanks for the reply, I talked to Andy a minute ago and he said the same thing. I hardly slept last night thinking I was going to have to basically start over - no fun. I will turn the heat on in the shop for a day and try it again. Living in the pac northwest 64 degrees is warm, guess I didn't think about metal temp and how close to the threshhold I am. I will know better next time and will do an overnight with some heat before I topcoat with anything. Wish me luck.
 
Metal temp is more important than outside temp, with epoxy.

Issue is now we have a coat of primer over it and that will slow the solvent release, even more.

If any way car can be rolled out in sun for a couple of days, that will work wonders, only other option is getting metal to 70-75 for a few days but one day in sun is worth 5-7 in shop.
 
You guys in the south are all comedians........I am in Washington state and the high temp today is supposed to be low 60's and sunshine - probably not, we hardly saw it in july this year :) I guess shop heat will have to do it, I will get it in the mid 70's and keep it there for a couple of days - a small inconvenience compared to sanding it all off.
I haven't painted a car in 20 years and have been really enjoying working with your products, way better and easier than the old days of concrete filler, DP40 epoxy/K200 or laquer primers and acrylic enamel single stage! I can't say enough about the fact that I just got tech support help within 24 hours-from the owner of the company, I am a client forever even if I did screw this up.
 
Actually, if sun is shining, it can be 30 degrees out and it will do wonders, its all UV'S.
 
I believe you, unfortunately we have little experience with sunshine.......now rain, ask me anything. When I retire I am spending the winters where I can have a palm tree in my front yard.
Thanks again for the help, great product and support; I will recommend to everyone. I got the car in the oven as I write this.
 
blazerman;1469 said:
You guys in the south are all comedians........I am in Washington state and the high temp today is supposed to be low 60's and sunshine - probably not, we hardly saw it in july this year :) I guess shop heat will have to do it, I will get it in the mid 70's and keep it there for a couple of days - a small inconvenience compared to sanding it all off.
I haven't painted a car in 20 years and have been really enjoying working with your products, way better and easier than the old days of concrete filler, DP40 epoxy/K200 or laquer primers and acrylic enamel single stage! I can't say enough about the fact that I just got tech support help within 24 hours-from the owner of the company, I am a client forever even if I did screw this up.
Click to expand...

Must be one of those folks living west of the mountains, been nice and sunny over here on the east side / Idaho border
 
Good news, the primer finally set up. I took about 5 days in the shop @ 72 degrees and 1 day outside in the sun. I can sand it with 150 paper without gumming up and if I hit it with laquer thinner it doesn't show on the towel unless I rub for a bit so I am going to prime over and continue blocking. I will call this lesson learned - read the tech sheets and pay attention to metal temperature on epoxy! I can't say enough about the tech support with this company and this great product!
 
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