Mixing brands question

[satellite66]

What's the consensus on mixing brands (different primer and paint), is it bad to do? Do some paints not work with some primers? Just wondering because I'm having the doors on a project soda blasted and the guy doing them said he would prime them too. He is going to use Transtar. Will I have a problem if I use a different brand paint? I intend to have the original (ford) color mixed.

 

[okiemopar]

You shouldn't have a problem, you need to hit them with a sealer before you paint them any ways

 

[mattsmopars]

Just stay with the same type or family of paint system.
You don't want to mix urethane and lacquer paint systems.
I have used alot of transtar products and have had very good luck. My 67 dart was epoxy primered with transtar after it was medi blasted. I have also used there clears over dupont, PPG, and ICI basecoats.
Matt

 

[satellite66]

Thanks for the input!

 

[satellite66]

Just stay with the same type or family of paint system.
You don't want to mix urethane and lacquer paint systems.
I have used alot of transtar products and have had very good luck. My 67 dart was epoxy primered with transtar after it was medi blasted. I have also used there clears over dupont, PPG, and ICI basecoats.
Matt

Did you sand the epoxy primer and if so with what grit(s)? How many coats of primer?

 

[eric383]

I have never had any experience with soda blasting but I have heard about some of the big paint companies not standing behind their products if it is applied over soda blasted metal. I assume your blaster knows how to prep for primer after blasting. Find out what kind of primer he will use and stay within the same chemical family. I prefer to us epoxy primer over bare metal. If you don't have any filler to put on then prep the door for color per the manufacturers spec sheet. I have used SPI and PPG epoxy primer, DuPont Chroma base color and SPI, DuPont, and a few other brands of clears over the base color with no ill effects. Just follow the spec sheets for flash times. Here is a little read on soda blasting issues.
http://board.autorestorermagazine.com/Topic524-4-1.aspx

 

[satellite66]

Thanks, that thread has some good info. I asked the guy what medium he used and he said aluminum oxide. I don't know if it can have the same problems as soda.

 

[eric383]

You should be ok with that as long as the bare steel is cleaned good before primer.

 

[Doright]

Transtar isnt bad stuff I have used it before I would stick with using all there products together tho don't go mixing.

Alum Oxide is not the same as Soda, Soda does leave a powdery stuff behind paint wont bond to needs to be washed and neutralized after blasting is all. I have never tried it I do not know any thing about other than it must be washed fairly well after ward.

I do a Metal prep before paint any way that washes and Rust proofs the metal before I spray any paint.