Has anyone sanded down the wiper arms to respray them?

[JubJub]

If so how would you go about sanding them? I don't just want to take off the parts where its rusted and respray because then it wouldn't be even.

Also, what kind of spray would you spray those with? Any suggestions anyone?

[Big Willy]

I'd wet-sand them with 600grit, then spray with a black trim paint, I prefer SEM

[bmw325csi]

If they are not chipping, just scuff them with a red scuff pad.

[Tha Driver]

Since they're rusted, you need to blast (sand, glass beads, or other media) them & prime & then paint. Try to stick with the same brand primer & paint if you can; any good semi-flat (or satin) black will work.
~ Paul
aka "Tha Driver"