From sonicmountains painting guide....
“Use a flat block on the flat areas and wet sand up to 2000 grit. It should look evenly dull with no major scratches. Then I use machine cutting compound and an electric buffer. I normally tape any hard edges at this point as its easy to cut through in those area. the edges and corners will buff up fine in the later stages, the machine cutting compound is mainly for the flat areas. 2 or three applications usually, followed by liquid cut and polish, then something like Meguiars Scratch X to get rid of final swirls. The last Scratch X application I use those little foam application and buffing pads - they work really well.”
Here...good thread....
https://www.buildyourownguitar.com.a...l=1#post187569