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Anyone here ever use Duplicolor's primers?


I've used it. I was not impressed. I don't know how it compares to other rattle-can primers, but I suspect any primer that has to go through the nozzle of a rattle can isn't really "high build." It takes forever to dry and clogs up sand paper like crazy too.

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Can I sand the entire car with 80 then 220..then spray either the filler or high build primer?


Only use 80-grit to sand areas where the paint needs to be stripped off. If the paint is in OK condition and just needs scuffed up, go straight to 220, 240, 320. Any of those are ok for regular sanding.

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I would then dry sand the entire car with 400 grit, then roll first coats of paint?


Change that to _wetsand_ with 400.

Fine grits, 400 and above, clog up really quick when used dry. You'll find sanding with 400-wet to just work better.