dadiOH wrote:
I have need of an undercoater/primer that will sand very, very easily
and which can be applied over epoxy. Preferably one that is generally
available at brand name paint stores or home improvement centers.

What's the application? If you rough up the surface of epoxy most
primers will bite. You could try Benjamin Moore's Fresh Start - comes
in several flavors. It has added resins to increase the adhesion - you
can paint over gloss paint and formica with it.

R