replacing my back bumper and need to paint the new one, looking for advice Options

[scott_in_nh]

My 74 bumper rusted around the tits

I found out when I bumped it with my knee and it fell off and hit my foot

So I bought an earlier titless bumper that is orange

I'll be painting it satin black with a spray can

What grit should I sand it with so the new paint gets some bite?

Should I prime it?

If so, what type of primer? Should I sand the primer? If so, what grit?

Thanks

Scott

[DickSteinkamp]

Hard to say without knowing what your goal is and what the orange bumper looks like now, but...

The best choice is to have a body shop refinish it.

Second best, have the bumper sand blasted, Then do whatever body work is necessary, spray it with a couple of coats of catalyzed high build primer, sand with 400 dry (with a block where ever possible), then a coat of catalyzed sealer, then whatever color you have picked (wet on wet with the sealer).

Third best, sand the bumper with 180 grit (with a block where possible), feather out any chips in the original paint, fill any dings and block them with 180, spray several heavy coats of rattle can high build primer (I like SEM products), sand with 400 dry (with a block), apply your rattle can color (I like SEM Trim Black)