quick epoxy primer advice - Team Camaro Tech
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post #1 of 10 (permalink) Old Dec 22nd, 18, 03:07 PM Thread Starter
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Ron
 
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quick epoxy primer advice

I am getting ready to spray a few parts with ABM 8412 epoxy primer. Turns out I am out of reducer. I have seen threads on using epoxy primer and catalyst only. Can I leave out the reducer without any ill effects?


Sheet calls for 4-1-1/2 (1/2 reducer, up to 3 or 4 if you want to sand it?)


No issue waiting if I need to. I do not need to sand it afterwards. Just a base sealer coat.


Thanks!

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post #2 of 10 (permalink) Old Dec 22nd, 18, 03:22 PM
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Al
 
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Re: quick epoxy primer advice

Ron, I'm not familiar with that epoxy but because it calls for reducer I would
guess you're gonna have trouble spraying without using reducer. If you're
top coating all epoxies have a time window if you get outside of you must sand.

Al

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post #3 of 10 (permalink) Old Dec 22nd, 18, 03:26 PM Thread Starter
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Re: quick epoxy primer advice

Not a top coat, just sealing bare metal spots. I have a couple larger tips but you are correct, it might not spray well.

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post #4 of 10 (permalink) Old Dec 22nd, 18, 06:39 PM
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Tom Anderson
 
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Re: quick epoxy primer advice

Reducer thins it out so it will spray [B]if you move forward I believe your in for trouble
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post #5 of 10 (permalink) Old Dec 22nd, 18, 07:09 PM
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Garth
 
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Re: quick epoxy primer advice

There are guys here more knowledgeable than I, but my understanding is the use of reducer is for a sealer just prior to top coating. The reducer provides a smoother, flatter coating than unreduced epoxy. Just one coat is used as a sealer (prior to top coat), but obviously doesn't provide the rust protection that straight epoxy does. I believe the term "sealer" refers to sealing the underlying primer and filler from the top coat solvents. It's not an adequate sealer as far rust proofing goes as it's reduced and usually just one coat application.

Maybe Scott or Don will chime in here with a more experienced explanation...
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post #6 of 10 (permalink) Old Dec 22nd, 18, 07:29 PM
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Don
 
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Re: quick epoxy primer advice

http://www.autobodymaster.com/plugin...Primer_PDS.pdf

Edit: Reading the original post again it sounds like you want to use it as a sealer before base in which case the datasheet clearly states 4 parts reducer and you have a 30 minute window to apply your base.

Don

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Last edited by dhutton; Dec 22nd, 18 at 07:47 PM.
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post #7 of 10 (permalink) Old Dec 22nd, 18, 07:54 PM
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Garth
 
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Re: quick epoxy primer advice

Post #3 says "sealing bare metal spots"....

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post #8 of 10 (permalink) Old Dec 22nd, 18, 08:01 PM
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Lynn
 
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Re: quick epoxy primer advice

But you are planning to top coat eventually, right? Most epoxy primer has not UV protection. It will not hold up unless top coated.

If you aren't going to top coat within the window, you will have to sand it and top coat. Don't use the epoxy primer as a top coat.

Lynn
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post #9 of 10 (permalink) Old Dec 22nd, 18, 08:26 PM Thread Starter
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Ron
 
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Re: quick epoxy primer advice

Thanks all for the replies. I am going to wait and get some more reducer. I will stop where I am at and re-prep later. It is not for a base coat prep, just bare metal sealing. Sorry for the confusion in the initial post.

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post #10 of 10 (permalink) Old Dec 23rd, 18, 05:12 AM
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Don
 
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Re: quick epoxy primer advice

For bare metal the datasheet states up to 1/2 part reducer for a VOC compliant primer. So no reducer needed for priming if you can get it to spray the way you want. Keep in mind the 72 hour recoat window.

I would recommend against the use of reducer when spraying bare metal. You donít need it to lay slick.

Original post says base sealer coat. To me that means sealer before base coat...

Don
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