I bought a gallon of Eastwood's Grey 1:1 primer. Heard good things about epoxy primers here and had confidence Eastwood would be a good choice. Now I'm not so sure. Guess I should have researched more. Instructions say its sandable "in a few days". I plan on putting on a few coats of primer to smooth imperfections but don't want to wait a few days between coats. Need to get the painting done while the NC weather is good. Anyone have experience with sanding this primer? I assume the problem is "gumming" if its sanded too soon, right? Can you recommend a minimum cure time before sanding? If left too long is it difficult to sand? Thanks.
Sorry, I don't know. Just thought someone should reply so you know it's not invisable. I would assume you are correct, but also remember if it's that soft the sanding may leave deeper scratches then when properly cured. Would suck to end up down at the metal on the edges because the sandpaper bit in too much. I'm in VA and in a similar boat. I have final primer on and need to wet sand it then paint, but it's been so cool and usually we have some 80-90 degree days this time of year so I bought a slow reducer for that temp. Now my work schedule keeps me out of town 7-14 days at a time. It may be next spring before I can paint now.
Guess no one uses that primer. I sanded the under side of the hood after two days. No significant gumming but it was quite soft. I planned on multiple primer coats so don't mind going thru on the high spots. Primed the engine compartment yesterday. Rain forecast tomorrow so no paint for a couple of days. Hope you get come good weather when you're home.
I have NOT used that particular primer, but I do like to let a car sit in the sun for a day with epoxy primer.
Yes, let them cure, they are not like lacquer primers that dry within hours. And they are somewhat hard to sand once cured. But remember, dont do your bodywork with epoxy primer. Dont sand it off, just get it ready for whatever is next in your process.
Wow, we used PPG DP 60 on my engine compartment, then painted it with in a few hours, no sanding required.
In that application you are using it as a sealer and that's fine. It can also be sprayed unreduced and used as a primer.
