This should perhaps go to the finishing forum.
For spray lacquer finishes which - depending on customer requirements - I might flatten with progressive wet sandpaper followed by polishing and even wax. I would start with 400, 500 or 600 grit and progress typically to 2000 (Norton Black Ice) grit. Recently I "drank the coolaid" and bought into the Festool system, primarily to control dust on coarser grit wood/plastic sanding, but also because of it's flexibility with polishing. I was "caught on my heels" to discover (only after the fact) that the Festool grits seem to deviate significantly in the higher grit ranges (see image below).
Is this correct? Here is where I got into trouble ... I'd wet sanded to 800 grit and then used the Platin 1000 ... turns out to have been a major step backwards. No one at the Festool retail store brought this to my attention ... my own "mea culpa" for not reading the fine print.
Page 3
http://www.festoolusa.com/Web_files/...ol_sanders.pdf