I have a car in the shop 1952 Merc 2 dr hardtop that had some rust repair and body modifications done to it about 10+ years ago by another shop. The car was sprayed with 2 light coats of dupont vari-prime(yellowish-green). The owner took it home and it has been inside ever since except about 8 years ago the owner contacted me and asked if I could paint the firewall and roof. I agreed to do that. I used all dupont products, 2k primer 1120, chroma base and 7600 clear. He then took it back home and put the motor and glass and chrome back on the roof. About 6 years ago I was busy and he had another shop paint the inner fenders prime the hood and fenders and edge them in.
It is now back at my shop to finish. A couple of things. While blocking the front fender that was sprayed 6 years ago by the other shop I noticed that the primer (I'm sure it is dupont 1120 as I had told the shop what product I had used on the top and firewall) has cracked on fender under the headlight. I took my pocket knife and was able to chip out the cracked area and it has bare metal under it. No vari-prime. My thinking is that the shop must have sanded the vari- prime off exposing the bare metal and the 1120 primer didn't adhere to the bare metal. I can not find any other place else that his has happened. My plan is to feather the primer out and put 2 coats of turbo primer on it and 1 coat on the fender for the last block sand. I did not want to shoot any SPI epoxy on it , because I have heard that vari-prime and epoxy don't like each other.
My plan for the rest of the car is to sand the vari-prime with 150 and spray a couple of coats of turbo on it block it and paint it. I really don't want to sand all of the vari-prime off.
I'm ready to listen.
It is now back at my shop to finish. A couple of things. While blocking the front fender that was sprayed 6 years ago by the other shop I noticed that the primer (I'm sure it is dupont 1120 as I had told the shop what product I had used on the top and firewall) has cracked on fender under the headlight. I took my pocket knife and was able to chip out the cracked area and it has bare metal under it. No vari-prime. My thinking is that the shop must have sanded the vari- prime off exposing the bare metal and the 1120 primer didn't adhere to the bare metal. I can not find any other place else that his has happened. My plan is to feather the primer out and put 2 coats of turbo primer on it and 1 coat on the fender for the last block sand. I did not want to shoot any SPI epoxy on it , because I have heard that vari-prime and epoxy don't like each other.
My plan for the rest of the car is to sand the vari-prime with 150 and spray a couple of coats of turbo on it block it and paint it. I really don't want to sand all of the vari-prime off.
I'm ready to listen.
