How to prevent bondo/filler from showing through epoxy primer?

R

ross52

Hi all,

I'm going to reapplying epoxy primer over some filler. I'm concerned about the filler showing through the epoxy primer. Is there sure way, I can prevent that from happening? The image below is a generic one and not one of my car.

thank you
B9B26536-02F5-4674-9971-95E5B49DA554_4_5005_c.jpeg
 
When this first happened to me I thought I rushed things and didn't let the filler cure long enough but realized I wouldn't have been able to sand it if that was the case.
 
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