Etching primer - spraying? How to buy?
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Cargo Master
Joined: Jul 2008
Posts: 2,578
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Etching primer - spraying? How to buy?
I am looking in to the stuff I need to do some painting and etching primer has come up. In the past I have bought this in spray cans/rattle cans. However, I picked up a spray gun set to do some more painting with. In my process for tracking down paint to use etching primer has come up.
Reducer for etching primer at NAPA is only sold by the gallon - for nearly $90. I forget what the primer itself was.
Is there a brush-on type etching primer that can be sourced locally (big box stores, sherwin williams, etc) I can get a pint or quart of then use something to thin it enough to run through a spray gun? I guess one of my confusions is why etching primer can be in a rattle can form (no reducer added) but no one seems to sell a brush-on form. It's either rattle can or 2 part high-volume/industrial quantities as far as I've seen. Maybe I'm not looking in the right places or looking for the right thing.
Reducer for etching primer at NAPA is only sold by the gallon - for nearly $90. I forget what the primer itself was.
Is there a brush-on type etching primer that can be sourced locally (big box stores, sherwin williams, etc) I can get a pint or quart of then use something to thin it enough to run through a spray gun? I guess one of my confusions is why etching primer can be in a rattle can form (no reducer added) but no one seems to sell a brush-on form. It's either rattle can or 2 part high-volume/industrial quantities as far as I've seen. Maybe I'm not looking in the right places or looking for the right thing.
Fleet Owner
Joined: Jan 2004
Posts: 26,007
Likes: 575
From: Brentwood,CA
There is a brush on used in maintenance coatings but its very expensive. You can't brush it because it flashes off so fast. Go to a real paint supplier instead of NAPA. Or order from TCP Global.
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Cargo Master
Joined: Jul 2008
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Likes: 58
Hmm. Your replies tell me how little I know about paint.
Sorry for what may be a basic question here but my understanding was that "etching" or "self-etching" primers bond with the top surface of the metal differently than paint simply adhering to the metal - almost like solder mixes with the very top surface of wiring. If an "epoxy primer" is used - is there a chemical in the "epoxy primer" that will allow that "mixing" with the top layer of the metal? Or is the primer just adhering to the metal? If the latter - wouldn't that make it less effective at preventing rust later?
Sorry for what may be a basic question here but my understanding was that "etching" or "self-etching" primers bond with the top surface of the metal differently than paint simply adhering to the metal - almost like solder mixes with the very top surface of wiring. If an "epoxy primer" is used - is there a chemical in the "epoxy primer" that will allow that "mixing" with the top layer of the metal? Or is the primer just adhering to the metal? If the latter - wouldn't that make it less effective at preventing rust later?
Tuned
Joined: May 2014
Posts: 348
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From: NW LA
You may want to check this stuff out...https://www.eastwood.com/paints/prim...er-system.html. I have not used it, but it has my interest. _ Tony.
Fleet Mechanic
Joined: Apr 2015
Posts: 1,586
Likes: 483
From: Kemptville, ON,
Not sure if this is cool on not on this forum but these guys are super helpful for me.
Autobodystore Forums
I am using epoxy on my truck. Strip it down to bare metal, wash using a metal prep, rinse with water, sand off the flash rust and epoxy prime. It works great. The guy I buy my body stuff from tells me this is the latest and greatest way of doing things and will not rust. I'm not a body guy, just learning as I go.
Eastwood also has great products.
Autobodystore Forums
I am using epoxy on my truck. Strip it down to bare metal, wash using a metal prep, rinse with water, sand off the flash rust and epoxy prime. It works great. The guy I buy my body stuff from tells me this is the latest and greatest way of doing things and will not rust. I'm not a body guy, just learning as I go.
Eastwood also has great products.
More Turbo
Joined: Apr 2009
Posts: 657
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Moderator
Joined: Aug 2002
Posts: 6,104
Likes: 384
From: Southern California
IMHO, painting today is a class in chemistry...it is VERY IMORTANT to use one brand and stay with that brand and it's specific product line from primer to final paint.... visit your local autobody paint supplier... they will be able to rpovide you with excellent recommendations and they will know about your environmental conditions (weather specific) to ensure when it's time to spray you have all the correct products including reducers, hardeners, etc.....that is something mailorder people can't provide.
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