Epoxy Primer after 7 days

Gilles

New Member
I redid a quarter panel because I broke the "7 day rule". Sanded right down to metal, then put 3 coats of epoxy primer. After 48 hours, I added filler and sanded it until it was near perfect which exposed some of the bare metal once again. Should I be putting another couple coats of epoxy before going any further ? I know it will need some metal glaze here and there. Or can I get away with one coat ? I seem to be going through a lot of epoxy primer only to sand most of it off when I do filler work.
 

texasking

Promoted Users
One coat is ok, 2 is better. Applying the metal glaze over filler or epoxy is fine, but ideally it should not be applied over bare metal for maximum corrosion protection.
 
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Gilles

New Member
Post #1 to #4 explains why I went back to bare metal. Several months had gone by where I would just scuff and add filler. Anyway, one coat will be added until I'm done with 180 grit. Based on what I've been reading on this great forum, I really dont need any 2K primer, just keep adding layers of epoxy until its good and then epoxy as a sealer than paint. Would this be an acceptable strategy ?
 

giggity

Promoted Users
got epoxy down yesterday. All good, but ran out...dammit. Called SPI and ordered another gallon this morning.

20210202_154430.jpg


20210202_154512.jpg
 

giggity

Promoted Users
so got epoxy down, but didnt get to rage filler within 7 day window, we are getting colder weather and its too hard to heat garage right now. so ill have to recoat with epoxy when it warms up. I dont mind doing this, but seems awfully repetitive. Is it equally effective if I just hit the area with 220 grit, do rage filler, then do 2 coats of epoxy?

20210210_150903.jpg
 

crashtech

Combo Man
I always advise guys not to bite off too much at one time. If you can't finish what you start, there's nothing wrong with confining your work to one or two panels at a time. That's how I used to do it when working at home on "side jobs." The only time anything got shot all at once was the final paint job.
 

elwood

Promoted Users
If past the seven day window, I usually will sand with 180 grit past where I've got to do filler work. Then apply filler. I've not had any problems with it that way. It has to be sanded anyway before any more primer is used.
 

Lizer

Mad Scientist
All I'm going to say is...I may or may not have done what you've described...taking a red scotch brite to entirely too old epoxy. But it's hard to recall because that was 7 years ago ;)
 
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