M
mark kestler
First post guys, but long time reader.
A little backstory. Restored a 1966 nova ss. black epoxy over bare metal, body work, 2 k primer, blocked and blocked and blocked, sealed then base and clear. Used spi epoxy, spi 2k regular primer, spi sealer, matrix base and spi univ clear. We probably didn't let the primer sit/cure long enough as we blocked it the next day after final prime then based and cleared. car was straight after painting. waited a week and wet sanded and buffed. looked amazing. 3 months later, there were a few rings/areas in both quarters that weren't there before. we again wet sanded and buffed and got the majority out but is still a little noticeable to me but I'm happy with it.
I'm now ready to paint/primer my 72 corvette. I'm thinking that the issues with the nova were related to us not letting the 2k primer sit/cure long enough before final blocking. we did not sit it in the sun and was in a temperature controlled garage the entire time painting. My father in law has noticed some primer shrinkage as well with SPI 2k on a car he;s doing now. now he has not been letting it sit either. just shooting primer, next day blocking, then noticing areas a few days later.
What is a way to prevent this primer from shrinking or what is the required time that I should wait for the primer to cure.
My plan with the vette is to spi epoxy over bare glass. then do my body work over the epoxy and when happy, re apply epoxy over the body work to seal. then I plan on the SPI 2k but should I spray the primer and wait a week or what do you guys do. Paint store who sells SPI, one guy loves it, one says it shrinks if you don't give it time. What is the appropriate time. Another thought is, should I skip the 2k and just use epoxy and block that. Should I use polyester primer. the body is pretty straight so I don't think I need the filling ability of polyester.
Looking for opinions to prevent shrinkage over time or just use epoxy for it all. Sorry for the long winded post. used the search bar just for those who like to say that first.
A little backstory. Restored a 1966 nova ss. black epoxy over bare metal, body work, 2 k primer, blocked and blocked and blocked, sealed then base and clear. Used spi epoxy, spi 2k regular primer, spi sealer, matrix base and spi univ clear. We probably didn't let the primer sit/cure long enough as we blocked it the next day after final prime then based and cleared. car was straight after painting. waited a week and wet sanded and buffed. looked amazing. 3 months later, there were a few rings/areas in both quarters that weren't there before. we again wet sanded and buffed and got the majority out but is still a little noticeable to me but I'm happy with it.
I'm now ready to paint/primer my 72 corvette. I'm thinking that the issues with the nova were related to us not letting the 2k primer sit/cure long enough before final blocking. we did not sit it in the sun and was in a temperature controlled garage the entire time painting. My father in law has noticed some primer shrinkage as well with SPI 2k on a car he;s doing now. now he has not been letting it sit either. just shooting primer, next day blocking, then noticing areas a few days later.
What is a way to prevent this primer from shrinking or what is the required time that I should wait for the primer to cure.
My plan with the vette is to spi epoxy over bare glass. then do my body work over the epoxy and when happy, re apply epoxy over the body work to seal. then I plan on the SPI 2k but should I spray the primer and wait a week or what do you guys do. Paint store who sells SPI, one guy loves it, one says it shrinks if you don't give it time. What is the appropriate time. Another thought is, should I skip the 2k and just use epoxy and block that. Should I use polyester primer. the body is pretty straight so I don't think I need the filling ability of polyester.
Looking for opinions to prevent shrinkage over time or just use epoxy for it all. Sorry for the long winded post. used the search bar just for those who like to say that first.