Rust cleanup and "new" bumper

[VX KAT]

The black ferric phosphate coating left provides a degree of corrosion protection and can be painted, in fact it enhances the bond between the metal and the paint similar to the industrial process called phospherizing.

1) Congrats on new baby....can't recall if you mentioned that before...

2) Wow, don't recognize that front skid plate....is that from a Trooper?

3) Thank you R2D2! I love reading your stuff cuz I learn so much from it. I'm guessing this explains why so many of the bolts I found for the cladding wheel wells were "black Phosphate" finish....and I couldn't figure out why they weren't something like grade 8 since it was an automotive application.