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Metal sealer after sanding, until time to paint
#1356499 Tue Apr 21 2020 11:32 PM
Joined: Apr 2020
Posts: 99
6
Shop Shark
I am doing my body work in stages as time allows. So I may sand down a fender one day and have some parts come back from the dip tank another week... I want to protect the metal until I have time to shoot primer on the bare metal. So, I have seen things like Eastwood Metal Wash to protect bare metal. It could be weeks between sanding and priming. I am thinking of using Epoxy Primer / Sealer over the rust sealer. Will I have to wash off the sealer with a special soap to make sure the paint sticks?

Re: Metal sealer after sanding, until time to paint
60ApacheC20 #1356518 Wed Apr 22 2020 01:38 AM
Joined: Mar 2010
Posts: 9,443
5
Master Gabster
If you want to be 100% sure that you have consistent adhesion and no rust creeping out later, I would recommend that you epoxy prime the parts right after they come from the paint stripper. Keep them in a dry place until you can work on them further.

Re: Metal sealer after sanding, until time to paint
60ApacheC20 #1356521 Wed Apr 22 2020 01:53 AM
Joined: Jan 2013
Posts: 1,662
S
Shop Shark
Agree with Carl here, it will save both time and money in the long run.
Best of all store your primed parts in a low humidity area, not a dirt floor out building.
When the time comes scuff up your primed parts and proceed with body and fill work.
Seal your primer before painting base or top coats.

Some people prefer to do body work and filler on bare metal before epoxy priming in this instance you can prime with a thin etch primer that will sand off easy when the time comes.
I'm not a professional but merely telling you what has worked for me.

Etch primered parts should sit a couple weeks before epoxy primering, or it can cure quicker if put out in the sun.

Last edited by sstock; Wed Apr 22 2020 02:02 AM.

1953 Chevrolet 3100
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Re: Metal sealer after sanding, until time to paint
60ApacheC20 #1356522 Wed Apr 22 2020 01:54 AM
Joined: Jun 2001
Posts: 730
T
Bondo Artiste
I etch primed all of my bare metal parts after blasting before body work. Some parts sat for two years after etch priming before body work and then epoxy priming. It worked out nicely.


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Re: Metal sealer after sanding, until time to paint
60ApacheC20 #1356545 Wed Apr 22 2020 02:52 AM
Joined: Oct 2005
Posts: 2,994
"Hey! I sound like Darth Vader!!
I agree with the previously mentioned prime right away if you can.

I would suggest you check with the manufacturer of your epoxy primer. Some say their stuff will stick best to bare metal, no etch.

Re: Metal sealer after sanding, until time to paint
52Carl #1356548 Wed Apr 22 2020 03:26 AM
Joined: Oct 2015
Posts: 349
F
Shop Shark
Originally Posted by 52Carl
If you want to be 100% sure that you have consistent adhesion and no rust creeping out later, I would recommend that you epoxy prime the parts right after they come from the paint stripper. Keep them in a dry place until you can work on them further.

No better advice has been given on this topic.

"etch" primer is a catch phrase for sticky primer... think about it... what good is a primer if it ISN'T sticky.

There is NO replacement for epoxy primer regardless of brand.

Bare metal needs epoxy primer to prevent rust creep. Rust Creep describes the ability for rust to creep under coatings once it starts with a scratch or chip. Just look at powder coating that's been chipped or scratched... that's "rust creep". Epoxy primer over bare steel is ONLY rust preventive coating.

Last edited by FootStomper; Wed Apr 22 2020 03:29 AM.

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Re: Metal sealer after sanding, until time to paint
60ApacheC20 #1356573 Wed Apr 22 2020 01:07 PM
Joined: Apr 2020
Posts: 99
6
Shop Shark
Great answer(s). Now I will do some research and add another post for "etch" Epoxy Primers. I will splurge on a 60 gallon compressor and a good paint gun after I figure out best price on a quality equipment. It has been 30 years since I painted a vehicle and it was not the quality I want this time.....

thanks for the great replies

Re: Metal sealer after sanding, until time to paint
60ApacheC20 #1356608 Wed Apr 22 2020 05:56 PM
Joined: Oct 2005
Posts: 2,994
"Hey! I sound like Darth Vader!!
Start with Southern Polyurethanes. Lots of tech info on their site. You could look at almost any manufacturer, but sometimes it's complicated to navigate their web sites unless you know the exact product you want.


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