well my 68 is (I mean was) almost completely done late last week. My car used to have a vinyl roof on it, and it has been plaguing my project from the beginning. When I pulled the vinly roof off years ago the roof was completely covered in rust. I sanded, treated, and had it painted about 3-4 years ago. It was a very shotty deal at that point knowing it was all only temporary as I knew I'd be re doing it right later on. Well all that rust came back in random spots all over the roof slowly over the years. Not that I was at all surprised, but it bubbled the paint, and looked like the moons surface. The rust for the most part is not deep, and the roof is still strong. This time round a few areas around the top of the rear window were cut out, and replaced w/ new metal. The roof was sanded down treated, sanded down treated over and over. Then a filler that dried, and looked like aluminum was applied to the entire roof. Sanded out smooth, then primed, base coated, clear coated, color sanded, and buffed out. Everything looked flawless. Until... They set it out side on a hot sunny day or three, to let the paint cure / dry whatever and bubbles started forming all over under the paint. He says they dont understand why, but are preparing to strip it down to try and figure it out, and start over.
Anyway -
I talked to a buddy yesterday whose dad used to own a body shop and he asked me if they baked the car - I'm like huh ? He says the car needs to be baked to pull all the gases out of the rust, and the gases coming out are causing the bubbles. I say then why was ther not gas bubbles before only rust bubbles, he says the gases were going into the metal, and are now coming out. I never heard anything like this before. Can someone verify, or tell me what needs to be done, or what is happening so I can have them fix it right this time - Does it need to be baked ? If so how ? How long / much etc..
Any ideas / suggestions wanted.
Please help
Thanks guys -
Anyway -
I talked to a buddy yesterday whose dad used to own a body shop and he asked me if they baked the car - I'm like huh ? He says the car needs to be baked to pull all the gases out of the rust, and the gases coming out are causing the bubbles. I say then why was ther not gas bubbles before only rust bubbles, he says the gases were going into the metal, and are now coming out. I never heard anything like this before. Can someone verify, or tell me what needs to be done, or what is happening so I can have them fix it right this time - Does it need to be baked ? If so how ? How long / much etc..
Any ideas / suggestions wanted.
Please help

Thanks guys -