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Old 10-26-2021, 02:27 AM   #1
Matt_50
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Quick paint question

I may be starting a new project soon and I'd like some paint advice. It'll be outside on a slab. Car cover on it in between work days. I want to attack each panel one at a time to fix and uncover PO bondo, rust, ect. I need to protect it until I paint it in a few months.

Are the primers in spray cans worth a darn? Is there one you guys recommend? I'm gonna start at the front, engine compartment, and work my way back.
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Old 10-26-2021, 05:05 AM   #2
special-K
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Re: Quick paint question

Do you mean good enough to temporarily seal the panel or good enough to be the foundation for your future paint job?
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'67 C1500 Wideside Super Custom SWB: 327/M22/3.42 posi..........'The 67' (project)
'72 K2500 Wideside Sierra Custom Camper: 350/TH350/4.10 Power-Lok...'The 72' (rolling)
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Old 10-26-2021, 10:10 AM   #3
blazer2007
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Re: Quick paint question

primers absorb moisture as far as I know, unless your using the 2K spray paints. Even those I,m not sure of
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Old 10-26-2021, 01:23 PM   #4
Matt_50
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Re: Quick paint question

I want to seal it. When its all done I'll go back over the whole car and then I can primer, sand ,paint all at once.
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Old 10-26-2021, 06:49 PM   #5
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Re: Quick paint question

I've had good luck with Rustoleum red oxide. I have Tractor Supply red oxide on my '67's cab and it's holding up after over ten years. But they switched suppliers since then and I've never used the new stuff
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"BUILDING A BETTER WAY TO SERVE THE USA"......67/72......"The New Breed" GMC

'67 C1500 Wideside Super Custom SWB: 327/M22/3.42 posi..........'The 67' (project)
'72 K2500 Wideside Sierra Custom Camper: 350/TH350/4.10 Power-Lok...'The 72' (rolling)
Tim

"Don't call me a redneck. I'm a rough cut country gentleman"

R.I.P. ~ East Side Low Life ~ El Jay ~ 72BLUZ ~ Fasteddie69 ~ Ron586
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Old 10-26-2021, 06:51 PM   #6
Matt_50
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Re: Quick paint question

I've seen that stuff, not sure how well it will work with auto paint.
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Old 10-26-2021, 11:18 PM   #7
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Re: Quick paint question

What I've done on a number of projects is strip door/hood/fender to bare metal and take them to a local body shop and spray them with 2K epoxy. Then store them out of the weather. Same thing with the cab/body. Typically the body shop since they spray the primer every day it's good stuff. I would not trust spray bomb under a base coat paint.
Also the body shop can offer advice on the sealer and paint so it works together.
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Old 10-27-2021, 07:50 PM   #8
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Re: Quick paint question

Strip/80 grit on a DA/Epoxy, keep out of the weather, should be good.
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Old 10-28-2021, 05:14 AM   #9
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Re: Quick paint question

Quote:
Originally Posted by Matt_50 View Post
I've seen that stuff, not sure how well it will work with auto paint.
I was thinking temporary. I agree epoxy primer is the best for this. I've never checked but I imagine a paint supplier could fix some up in spray cans.
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"BUILDING A BETTER WAY TO SERVE THE USA"......67/72......"The New Breed" GMC

'67 C1500 Wideside Super Custom SWB: 327/M22/3.42 posi..........'The 67' (project)
'72 K2500 Wideside Sierra Custom Camper: 350/TH350/4.10 Power-Lok...'The 72' (rolling)
Tim

"Don't call me a redneck. I'm a rough cut country gentleman"

R.I.P. ~ East Side Low Life ~ El Jay ~ 72BLUZ ~ Fasteddie69 ~ Ron586
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Old 10-28-2021, 08:03 AM   #10
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Re: Quick paint question

You can get epoxy primer in a spray can....you puncture an internal activator and it will last about 3 days in the can....
it's kinda pricey so be ready to paint several pieces while it's still useable
https://www.amazon.com/SprayMax-Acti...D6V&srpt=PAINT
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Old 11-16-2021, 09:35 PM   #11
hugger6933
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Re: Quick paint question

The recoat window closes pretty quick on the epoxy primer I normally go ahead and coat with high build after the epoxy dries usually the next day either way [any ] way you go you should keep it out of the weather if you can but I do have primered parts out side my self now. I always recoat weather it is just epoxy primer or high build if it has sat any good length of time, I will sand 180-220 grit then two more coats of high build. Also, any time you put spray can primer on a truck[or toolbox even] I would take it back off and reapply a primer designed for auto use in a paint world. I'm sure that there are tons of paint jobs that have spray can primer under them but why take that chance when your spending what could be a goodly amount of money to buy all the stuff needed to paint one. I love Omni[PPG] and love the omni pro line of paints[or is it omniplus?] I cant ever remember but either way it is great stuff you can feel the diff between the regular omni and the pro just by shaking the can. Or at least I can tell the diff by feeling without looking at the cans. Jim
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Old 11-22-2021, 09:01 PM   #12
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Re: Quick paint question

Working outside in those conditions here's what I do. First I wipe all the bare metal down with metal prep with zinc. Apply 2 coats aluminum pigmented moisture cured permanent rust sealer/primer,{non leafing} apply epoxy or urethane surfacing primer over it the same day. Then go from there. Epoxy primer is waterproof but not airtight , that's why it contains a zinc as a rust preventative. Zinc Is sacrificial so if you left it in epoxy primer for a year outdoors there's a good chance you might have rust bleed thru.
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Old 11-22-2021, 11:31 PM   #13
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Re: Quick paint question

Good question. I’m facing a similar situation. I can’t do all of the metal work in one day, so what do I use as a coating after I do one spot/job but still have weeks or months left before I do a total sand down and spray the epoxy?
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Old 11-22-2021, 11:50 PM   #14
lupo
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Re: Quick paint question

There are metal preps that contain zinc. If your wipe a panel down It will clean and dissolve rust and it'll stay rust-free for months indoors. Outdoors the time span would be shorter , you would have to reapply it like every month. Some epoxy primers you'll have to scrub the residue off .,others you don't. But epoxy you got to be above 60. I personally prefer urethane primers .
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