The Body Shop TECH General questions that don't fit in any other forum

          
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Old 02-24-2014, 02:13 AM
6d7gto 6d7gto is offline
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Default Which epoxy primer to use over bare metal?

The car will be completely blasted to bare metal this spring then primed and left in primer for a year or more. Heard horror stories about certain primers coming off in sheets. Would like to go with red oxide color if possible.

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Old 02-24-2014, 12:32 PM
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GOAT WHORE GOAT WHORE is offline
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PPG dp epoxy or SPI epoxy is what I would go with.

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Old 02-24-2014, 05:43 PM
Mark O Mark O is offline
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PPG DP 50

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Old 02-24-2014, 07:10 PM
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Another vote for PPG DP. However you will be outside the recoat and have to put another coat in the future. I would probably use DP and then follow up with K-36 or 38 (high build).

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Old 02-24-2014, 08:01 PM
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DPLF 74 is close to a red oxide color.
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Old 02-24-2014, 08:19 PM
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Quote:
Originally Posted by carcrazy View Post
Another vote for PPG DP. However you will be outside the recoat and have to put another coat in the future. I would probably use DP and then follow up with K-36 or 38 (high build).
X2 on that. Doing it that way enabled me to work on other things without about having to sand and re-spray the DP and worry about adhesion.

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Old 02-24-2014, 08:49 PM
lsp lsp is offline
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EPOXY PRIMER... WOULD USE BLACK JUST CAUSE WHEN YOU DO BODY WORK ON IT YOU WILL SEE ALL THE DENTS ...

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Old 02-24-2014, 08:51 PM
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Are people using the DPLV 2.1 VOC epoxy primers? Is VOC standard working out?

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Old 02-24-2014, 09:04 PM
paint guy paint guy is offline
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Unless it is a requirement in your area, I wouldn't worry about a low VOC product. All you are doing is spending extra money to buy a primer thinned with exempt solvents which are typically more expensive. low VOC doesn't necessarily mean higher solids, just different solvents.

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Old 03-02-2014, 01:08 AM
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SPI

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Old 03-02-2014, 01:20 AM
6d7gto 6d7gto is offline
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Thanks folks!

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Old 04-23-2014, 01:37 PM
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Bringing this back up. Did you get your car blasted and primed?


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Old 04-23-2014, 08:59 PM
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Id use SPI. It has a nice long working window and is easily sanded if you need too. Nice price too. Comes in black, red, and white.

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Old 04-23-2014, 09:01 PM
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Originally Posted by gtome View Post
Id use SPI. It has a nice long working window and is easily sanded if you need too. Nice price too. Comes in black, red, and white.
And grey.

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1969 GTO RAIII 4spd. Verdoro Green/black, black int.
1969 GTO 4spd. Crystal Turquoise, black int.
1970 GTO 4spd VOE Pepper Green, green int.
1967 LeMans 428 Auto. Blue, black int.
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Old 04-23-2014, 09:08 PM
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I didnt know they had grey!

Also as a side note, if you reduce it (black), it drys to a nice sheen like suspention parts should be.

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Old 04-24-2014, 10:57 AM
6d7gto 6d7gto is offline
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Bringing this back up. Did you get your car blasted and primed?


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I'm taking the rest of the week off to blast the car. Thanks for asking. I'll let you know how it turns out. I'm using a dustless blaster DB150. Here's a link: http://dustlessblasting.com/

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Old 04-24-2014, 11:10 AM
6d7gto 6d7gto is offline
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I'm confused now. I talked to a local body shop owner and he said not to use Epoxy primer but if I do, use an acid based etching primer first. He also said the epoxy primer is porous and will rust underneath. Is he correct or way off base?

Sounds like SPI is the best way to go at this point. I will give them a call. Plan to have it primed next week. Was going to do it this weekend but slight chance of rain. Figures.

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Old 04-24-2014, 11:58 AM
propuckstopper propuckstopper is offline
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Quote:
Originally Posted by 6d7gto View Post
I'm confused now. I talked to a local body shop owner and he said not to use Epoxy primer but if I do, use an acid based etching primer first. He also said the epoxy primer is porous and will rust underneath. Is he correct or way off base?

Sounds like SPI is the best way to go at this point. I will give them a call. Plan to have it primed next week. Was going to do it this weekend but slight chance of rain. Figures.
Call Barry directly at SPI. Best tech support ever. He always answers the phone, and will give you all the correct information you need to succeed.

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Old 04-24-2014, 01:54 PM
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SPI.

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Old 04-24-2014, 02:54 PM
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Quote:
Originally Posted by 6d7gto View Post
I'm confused now. I talked to a local body shop owner and he said not to use Epoxy primer but if I do, use an acid based etching primer first. He also said the epoxy primer is porous and will rust underneath. Is he correct or way off base?
Pretty much the exact opposite of reality. Since you are blasting it will leave a nice texture for epoxy to stick to. Epoxy is not porous, high build is. Etch primer is old tech.

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