A local body shop is painting my bumpers soon. They said I could save a little money if I did the bondo work (i.e., plastic bumper filler) on a few small bumps/dings beforehand. Then they would just spray a sealer, followed by new paint. I applied the bumper filler and spent some time feathering out the filler to blend smoothly. The photo shows 150 grit, but I'm going to follow up with 400. As I run my hand over it, it feels very blended. However, primer and paint can reveal tiny imperfections that may need touched up. Since that's the body shop's job, is there another way I can get a good glimpse of any small imperfections? I don't want them to spray the paint, and there be any lingering imperfections that I missed.

 

Spray bottle full of water or soapy water.

 

I'll give it a shot! Thx!

 

Wetsand with these. Super smooth.

 

That tells a lot.
Brand name and grit steps are helpful.

 

How does that show imperfections ?

 

Mirka Abralon Pads - 4000 grit. They come in 4000, 3000, 2000, 1000, 500, 360 and 180 grit.
https://mirka-online.com/abrasives-b...lon/discs.html

 

See also:
All About Mirka Abralon Discs