Another epoxy question!

RosharonRooster

RosharonRooster

Promoted Users
Yesterday i wire wheeled the underside of the trunk for my 61 bubble top. The trunk is extremely solid. During this process it was evident that from the factory no primer was used. Simply ermine white laquer over bare metal. Pretty cool to me. Last night i hit the bare metal with 2 coats of epoxy. My question is....is there even a need to 2k prime this thing? Why not scuff the epoxy and shoot my basecoat?. Isnt that essentially the same as putting basecoat over reduced epoxy as a sealer?
 
Here is a during pic.
 

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you are perfectly fine sanding and basing right on the epoxy. if you have epoxy down then adding a 2k primer is just for filling in small imperfections and its easier to sand than epoxy so its really just a surfacing primer. if you feel the metal is smooth and flawless enough for you after epoxy then by all means just shoot it. just shoot a thin sealer coat of epoxy before you base just for adhesion purposes.
 
crashtech said:
We won't epoxy over wire wheel, always scratch with 80. Wire wheels can polish/smear the metal and not leave enough tooth for good adhesion.
Click to expand...
Maybe. Maybe not. GM didnt scratch anything with sand paper and the paint lasted 60 yrs without any primer....
 
Even back in the old days, OEMs gave vehicle bodies and parts a conversion coating that inhibited rust and helped paint adhesion. If you have ever used stripper on an unmolested 60s car, you can see that if the metal is not scratched, it won't flash rust due to the intact factory coating.
 
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