primer types?

[rowingone]

I am getting two different stories about what type of PPG primer I should use on my 64. The polyester MX241 or the K36?? Help!!!

 

[61 Silver]

PPG Primer

Hi!

What type of paint are you using for color.

 

[studiog]

Rowingone, I am right behind you on my project. I hope to be priming in another week or two and I'm trying to finalize the details of my paint system. I'll be watching this thread to see how you make out. Are you going to use [epoxy primer/high build surfacer/base coat/clear coat] or something different?

 

[rowingone]

Well thats the question - the ppg system is what I'm using Base coat/clear coat . . one step for the jambs. Its just a question of whether to use the epoxy primer or the polyester . . Lars' article said use the epoxy K36 but my painter friend and the body shop supply store guy said use the polyester because its thicker. I dont know which to use!!???

 

[studiog]

Well thats the question - the ppg system is what I'm using Base coat/clear coat . . one step for the jambs. Its just a question of whether to use the epoxy primer or the polyester . . Lars' article said use the epoxy K36 but my painter friend and the body shop supply store guy said use the polyester because its thicker. I dont know which to use!!???

From what I understand, most of the experts recommend both. The epoxy primer first to seal down the body and everything underneath including old repairs and old paint. Then the filler/surfacer (which is basically sprayable body filler) to fill any imperfections followed by block sanding to get the panels nice and level. On panels with allot of repairs some recommend a second coat of filler surfacer and another block sanding then the top coat etc. This is the procedure I am considering.

 

[rowingone]

studiodog - I just talked to PPG in Ohio 440-572-2800 and they recommended exactly what Lars did on his article on this forum. The only thing she said was to let the dp sealer dry for 3-4 days at 70 degrees over any repaired areas before going to your K36. she also said you could use the higher build K38 instead of the K36. She emphasized that you must maintain a 2 mil final thickness of the K36 prior to color.

 

[studiog]

She emphasized that you must maintain a 2 mil final thickness of the K36 prior to color.

In other words don't sand back into the epoxy?? or if you do add one more coat of K-36?

 

[rowingone]

yes regardless of how many coats of k36 you use and sand down . .the final thinkness must be a minimum of 2 mils.