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Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
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| | | | Joined: Oct 2009 Posts: 164 'Bolter | | 'Bolter Joined: Oct 2009 Posts: 164 | Ok this for those who know way more about paint than i do. Can you put self etching primer over parts of the sheet metal that still have some paint left behind after sanding. Yes i am using a rattle can for now.
Thanks
Joe | | | | | Joined: Jan 2013 Posts: 1,384 Shop Shark | | Shop Shark Joined: Jan 2013 Posts: 1,384 | Self etching primer has no advantage on steel.
It is absolutely necessary for aluminum, stainless and galvanized.
Regular primer will hold on cleaned steel or cleaned sanded paint every bit as well as self etching.
Barely cleaned (remove dirt,oil and loose rust) rusty steel does best with a rusty metal primer. | | | | | Joined: Oct 2009 Posts: 164 'Bolter | | 'Bolter Joined: Oct 2009 Posts: 164 | Did not know that, thank you Jim | | | | | Joined: Oct 2006 Posts: 9,671 'Bolter | | 'Bolter Joined: Oct 2006 Posts: 9,671 | I agree with Jim 100%. Etching primer is the most misused
product on the market.
It's meant to give tooth to a surface that is difficult to bond
to. Sandblasted or sanded steel doesn't need etching primer.
It was originally formulated to aid in the bonding of paint to
the galvanized rocker panels that were introduced a few decades
ago.
DG
Last edited by Denny Graham; 09/15/2014 5:06 AM.
Denny G
Sandwich, IL
| | | | | Joined: Aug 2011 Posts: 815 Shop Shark | | Shop Shark Joined: Aug 2011 Posts: 815 | When I installed new stake pockets and had to do some fab work,I sprayed rusto etching primer and it flash rusted in no time even tho it is under cover. I will be using epoxy primer for the exterior now. | | | | | Joined: Jan 2013 Posts: 1,384 Shop Shark | | Shop Shark Joined: Jan 2013 Posts: 1,384 | None of the normal primers are weather resistant. They are Primers.
However a final coat of Primer Sealer if you are not going to top coat right away, will be rust free in dry storage for a year or more and in mild weather for months | | | | | Joined: Oct 2006 Posts: 9,671 'Bolter | | 'Bolter Joined: Oct 2006 Posts: 9,671 | PPG DP90L only on fender 6 years ago and no primer under the paint on the boards 7 years ago. I'll get around to painting it one day, if,,,,,I live long enough! Truck is used on regular basis, I avoid rain when possible and never driven in snow/slush. http://www.pbase.com/dennygraham/image/156702149DG
Denny G
Sandwich, IL
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