What's up with my clear coat!!

[hca]

I know it might be an interior topic, but I think this forum might find me more help:

I painted some of my interior pieces black and the paint and primer came out good. But the clear coat messed everything up. I had only one coat of clear, and after 3 days, I went to check on it and it wasnt hardened all the way. I chipped a piece with my fingernail and it just kept peeling away down to the primer. I think I mixed the clear and herdener correctly. The guy that sold it to me said mix 2 part clear and 1 part herdener ( 10oz clear=5oz hardener) I gave it a shot and it didnt turn out as hard as it should. I am going to not mess with the other pieces for a few more days and see if they harden up all the way. When you touch the pieces, they seem normal but the slightest touch with your nail can make a tiny chip.

Heres what I really need to know:
Is it normal to take so long to dry? What are the right mixing proportions in case I was told wrong? Is it possible that I used too much/ too little hardener? Also, maybee I should have fogged the clear on several times to get it built up, I hit it in 2 shots 15 minutes apart.

I cleaned the parts up and it was all good up until the clear coat.

[BC Rod and Custom]

If you did not have access to a heated paint booth then you can experience extended cure times on your clear coat, but 3 days should be more than enough time if it was mixed correctly for you to be able to handle the piece without leaving marks/chips in it.

[Izzy]

:word: I would suspect either the hardener was mixed wrong or the wrong hardener was used.

What brand paint/clear did you use? Did you wipe down the base before you shot the clear? What was the temp and was it in the range on the tech sheet of the clear/hardener that you used?

[hca]

I used PPG clear and PPG herdener. The guy that sold it to me said they go together. I did not get any tech sheet or instructions, assuming they would be on the can. the temp was 65-70 degrees. what is the normal mixing proportions? I am going to do it over and use measuring cups this time. i cleaned the surfaces properly before shooting the coats.

[454ss]

All PPG cans and clears have mixing instructions on the labels...which type of paint was it....also how did you mix the paint...50% paint 50% reducer, also which reducer.....some idiots still use paint thinner instead of paint reducer.....it sounds like some how you put too much hardner....if you put to much it takes longer to dry, sometimes it never even drys.....take it all off and do it again.

[DjLunchbox]

oh man that sucks...:( chalk it up as experience now. :D

[hca]

The clear is OMNI SV MC262 and the hardener is OMNI SV MH267. I didn't use any reducer in the paint. Was I really supposed to? I tell you the guy that sold me the stuff was very minimal with his tips. I told him what I was doing, and I aksked him what he would recommend. I bought everything he recomended and used it according to his instructions. The paint and the primer seemed to be alright. on one of the pieces I painted, I tried to chip the paint and it was pretty durable. But once the clear was shot down, it seemed to have loosened up the paint and it started to chip and peel. I know that the clear is supposed to get harder than it is. If the reducer is a critical part, I am still willing to re paint everything. I want to do this right and figured with the paint shop's help, I could get it done. Guess not...

[Ovaltrackin33]

I know when i shoot my PPG Omni Clear (same stuff you got) I run a ratio of 4/1. (4 parts clear to 1 part hardner) that's with no reducer. I can't even dig my nail into it after a while. :-)

[hca]

so it would be like... 12 oz clear and 3 oz hardener?