Primer
 

Will someone tell me which epoxy primer from PPG to use on my 68. Car is stripped, prepped and I am about ready to start the priming phase. I know to ask the paint supplier but they are pretty young. I am looking for real world advice.. The supplier I've been getting my materials from has been great and works with me but I'm still looking for experienced input.
Thank you.

i would not use ppg primer. i would use spi epoxy then slicksand .

I'm kinda getting that picture of not using PPG primer. So I am researching SPI but you are saying slicksand which I will be blocking and than a sealer?
BTW, thank you for your input.

i seal with epoxy , build with slicksand , seal with epoxy .

I liked the results I got from the Evercoat Finishsand 4:1 Polyester primer. Had a good high build and easy to sand. I tried K36 PPG primer but did not care for it.

RVZIO

https://cimg6.ibsrv.net/gimg/www.cor...e032b420f.jpeg

So to get the order correct.
Seal with epoxy sealer/primer
Prime with high build Finishsand
Block the Finishsand in between coats
What to use for final sealer before base coat?

So to get the order correct.
Seal with epoxy sealer/primer
Prime with high build Finishsand
Block the Finishsand in between coats
What to use for final sealer before base coat?

So to get the order correct.
Seal with epoxy sealer/primer
Prime with high build Finishsand
Block the Finishsand in between coats
What to use for final sealer before base coat?

Your car look great. Maybe some day mine will.

So after the FinishSand, I blocked it Cleaned it all down and used Axalta Chromax products. I liked the fact that I could talk directly with the tech staff who answered all of my dumb questions. They had the line on what shade of sealer for the War Bonnet yellow from 71. They also suggested the higher degree products for the high heat and humidity here in Florida. No expert, but this worked for me. You have many ways of going and members will let you know what worked for them.
Good Luck in your choice. Oh that was my first metallic job and only the second vette I have painted. Makes me appreciate the folks that do this for a living.

RVZIO

On your 1968 ...there is no need to HAVE TO use epoxy primer. You can simply apply the polyester primer..

On cars that are SMC (which your 1968 is not).....then I DO apply an epoxy primer and I use PPG's DP90LF. The reason I apply an epoxy primer on SMC is due to the polyester primer I use... which has not been the SlickSand...it is seems to aid in linking up to it.

http://www.evercoat.com/images/ePIM/..._2_2015_EN.pdf

As for the sealer that you choose to apply on top of the polyester primer. It MAY BE wise to contact the paint manufacturer of the paint you plan on shooting and see what they say or offer.

Using PPG's epoxy primer as a sealer or even SPI's epoxy primer as a sealer PRIOR to painting the car should be more than sufficient...BUT....sometimes if by some odd chance you have an issue.....then the paint manufacturer is not going to warranty their product due to you did not use what they specified.

Do I use different brands of materials and have success....YES I DO...but I also know that if I start playing around with switching brands...I am not going to waste my time in trying to get someone to pay for my choices in what I used.

DUB

Epoxy Primer + Martin Senour Polyester Primer #5190
 

Thanks DUB, that answers some of the questions I have been struggling with in the last week: For my '77 I was looking into using the Martin Senour Polyester Primer #5190 which you are familiar with. I did not know if I should first be applying epoxy primer on the bare SMC or not.
I think what you just wrote is that yes, apply epoxy primer first on SMC. Now, I suppose you then apply the Polyester Primer #5190 within the recoating window of the epoxy primer for a chemical bond, as opposed to letting it dry and sanding it for a physical bond, right? Apologies for the intrusion. Thanks!

YES...I apply the 5190 on the epoxy during the 'window' of the epoxy that will allow it to be applied on top of it.

I think Martin Senour discontinued the 5190....or at least in my area that stopped selling it and now have some new 5192 ( I believe) and I have tried it BUT it is EXPENSIVE as all get out and I WILL NOT use it again and will use another polyester primer. More than likely SlickSand.

DUB

Thanks DUB. Good info.
I found these links:
https://www.napaonline.com/en/p/MSTGAL5190 for $221/gal (which in practice does not mean that it is still available).
https://www.napaonline.com/en/p/MSRGAL5192 for $234/gal.

Slick Sand is about half the cost. I may be using it too instead.

Dub

Have you tried the Eastwood polyester primer.
https://www.eastwood.com/eastwood-co...-surfacer.html

Pricing is very attractive.
They also carry the Evercoat brand.

damn that is expensive for a polyester primer. I use awlgrip 545 epoxy primer and pay $175 for a sprayable gallon, it builds up nice, sands easy, and can be thinned down to use as a sealer primer.

No..I do not use Eastwoods brand of polyester primer due to they do not make it...they re-package it and put their name on it....and I doubt they will tell you who makes it for them.

Not saying that it is not a good primer...but I would not buy it ..and possibly have to pay shipping to get it to me and use it....when I can get the name brand stuff locally.

Sometimes when costs of a product get to low...I begin to wonder why it is that way. Now if SlickSand or a major brand had it on sale...that is another thing entirely. kind of like when rebuilt master cylinder may cost $30...and new one is $100. I wonder if the cost savings is worth it when dealing with the brakes of a car. And a primer that we all rely on to do its job kind of falls in that same way of thinking. Is the cost saving WORTH it or not to possible take the chance.

IF I chose to use it I would have to shoot test panels and see how it holds up for quite some time before I would apply it on a customers car.

DUB

I use Spies Hecker Raderal Polyester 3508
Block it
then
Glasurit 285-60 2k primer
Block that
Sealer then paint.
Just my .02
I have used slick sand as well and I like it