Inspired by tutorials and videos on the net I've decided to try to get a piano black, high gloss mirror finish on an MDF surface that I'm painting. I'm just a DIYer so if it takes weeks to get the finish then so be it. So far, I've done the following: Dry sanded the MDF with 120 grit. 2 coats of Leyland Trade MDF primer. Wait until dry. Dry sand the primer with 400 grit until it felt smooth. 2 coats of Crown non-drip jet black high gloss applied with harris gloss brushes (the tin says use a brush and I can't imagine how you'd use a roller because this stuff is like jelly) The surface looks great, until you look at it at an angle where it catches the light then you can see brush marks. So my plan is... Wait 7 days for the first 2 coats of gloss to cure. Wet-sand with 600 grit to remove the brush stroke marks (will that work??) 2 more coats of the non-drip gloss 24 hours apart. Wait 7 more days. Move on to the final polishing steps by wet sanding with 600, 1000, 2000 then rubbing compound. Does that sound like it'll work? I know it's a lot of steps and takes time but I'm in no rush and would like to get that 'piano black' finish as best as an amateur hacker like me can do.