?? About SEM Self Etch Primer
Thread Starter
Pro
Joined: Nov 2003
Posts: 692
Likes: 1
From: Peabody Ma.
?? About SEM Self Etch Primer
I have just learned that SEM self etch primer is not compatible with most other primers and paints!
I have a bunch of large parts that I sprayed with self etch, and planed to spray epoxy primer on as the last coat. No need for a finish coat.
Contacted SEM Tech and they offer no product to go over self etch!
Would sanding back to bare metal, be enough to use just the epoxy primer? or anyone have a better suggestion?
The parts are big and have lots of contours, do want to sand down again if not totally necessary?
What do you guys do from Bare to seal, while working on the area(s)
Its to large of area to fix, sand and prime all at once, and not leave exposed repaired metal.
I have a bunch of large parts that I sprayed with self etch, and planed to spray epoxy primer on as the last coat. No need for a finish coat.
Contacted SEM Tech and they offer no product to go over self etch!
Would sanding back to bare metal, be enough to use just the epoxy primer? or anyone have a better suggestion?
The parts are big and have lots of contours, do want to sand down again if not totally necessary?
What do you guys do from Bare to seal, while working on the area(s)
Its to large of area to fix, sand and prime all at once, and not leave exposed repaired metal.
Advanced
Joined: May 2013
Posts: 79
Likes: 0
From: Waynesboro PA
I think I'd be calling a different Rep!!
This is right from the SEM website:
SELF ETCHING PRIMER adheres to steel, aluminum and stainless steel, for overall refinishing or spot repairs. Formulated for use under primer surfacers and with most paint systems.
This is right from the SEM website:
SELF ETCHING PRIMER adheres to steel, aluminum and stainless steel, for overall refinishing or spot repairs. Formulated for use under primer surfacers and with most paint systems.
Le Mans Master
Joined: Nov 2006
Posts: 7,215
Likes: 1
From: Orlando FL
That was 3 yrs ago I just sanded it with 400 and shot the epoxy
Melting Slicks
Joined: Jun 2006
Posts: 2,071
Likes: 147
From: S Nevada
I have used the sem self etch on small parts after blasting to bare metal. I've used both an epoxy paint sprayed with a gun and rattle can top coats. No issues yet. The finish with the epoxy paint top coat turned out really nice.
What issues did the tech rep say would occur? And why exactly would they make a self etching primer if nothing is compatible?
What issues did the tech rep say would occur? And why exactly would they make a self etching primer if nothing is compatible?
Last edited by Sunstroked; Jul 25, 2013 at 04:52 PM.
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Thread Starter
Pro
Joined: Nov 2003
Posts: 692
Likes: 1
From: Peabody Ma.
They where concerned with reaction to the phosphoric acid, causing the next layer to peel
I went to Crown Auto Body Supply, where I buy my paint. I was told to use what ever I want, they also gave me the same senario, but they have used the product in the same manner!
So epoxy primer it is.... Thanks All
I went to Crown Auto Body Supply, where I buy my paint. I was told to use what ever I want, they also gave me the same senario, but they have used the product in the same manner!
So epoxy primer it is.... Thanks All
Last edited by bruced267; Jul 25, 2013 at 07:24 PM.