Did some wetsanding today on my driver side fender.
This is copy and paste from my detailing forum. I used the PC 7424 and Edge 2000 foam pads with Optimum Compound, Pinnacle XMT series polishes, and Poorboy's Natty's Blue paste wax.

The Background: Some of you may remember that I was in a fender bender many months ago. I took the insurance check and did the body work myself. One of the things I needed to do, was replace my driver side front fender. I bought one from a local junk yard that was in pretty good shape overall. However, there was major water spotting everywhere.

Yellow pad with XMT3 and/or OC would not take it out, barely made an indent. I must of polished the fender over 4 times everytime I "jewel" my paint.

The mission: Wetsand the water spots out of the fender and polish back to a near flawless finish.

Process: The only sandpaper that I could get was 1500 grit, I would of like 2000 or even 3000, but I had to do with this. I let sit in warm water for about 3 hours.

I very lightly sanded the fender after squirting water onto the fender with a squirt gone. (I did a test spot first.) This only took a matter of minutes.
Following this I then polished the fender for 5min with the following:
OC on Yellow Edge pad - Started speed 5.5, and then bumped up to 6.
XMT3 on Green Edge pad (I was planning on using XMT2, but I realized I needed still needed a little more bite after OC) - Speed 6 entire time
XMT1 on light cut yellow pad (I got this from Aaron at edge. It feels just like the soft blue/white pads) - Speed 5.5
PB's Natty's Blue on White Edge - Spread on speed 3. (I've never applied wax via PC, so I wanted to try something new)

Overall, I was pretty pleased after all said and done. I would do it again, but I would get 2000 grit for sure.

PICS!!!
These are all the waterspots I was dealing with:

 

During wetsanding:



After polishing and wax:

 

One more:

 

looks good...I need to get the top of my car wet sanded as well. those little etching marks drive me up the wall!!

 

Now thats something Id never do myself. Looks like it came out alright though.

 

Yep! Like I said before, I wish I had 2000grit. I've also learned that I could have sprayed 50/50 water/white vinegar during wetsanding.

 

awesome! yay for no orangepeel!