After many sanders and different techniques, I've finally found a sander and technology that works best for me.
I outlined my grinding technique in many of my previous projects, for example my epoxy bar project.
Be sure to check out this project for more details.
First, my festool RO125 rotex improved my projects dramatically.
This sandal is expensive, but it's worth every penny.
My MFT3 work table also helps secure the DIY folding table during grinding.
The grit sequence I use with my normal sand plate is 80, 100, 120, 150, 180 and 220 grit.
I also use a soft sand plate with 320 sandpaper. Festool ro125 makes it easy to replace sanding plates for higher sandpaper.