This week in guitar building I started by filing my fret ends flush to the board. Then I used a purple sharpie to cover all the frets and sanded the frets on a sanding beam so they’d all be at the same level, followed by sharpie again. Next I used a fret recrowning tool to do just that, first with 150 grit leaving and thin line of sharpie, then with 300 grit getting ride of it completely. After that I used a file again to bevel the frets edges so it would be a harsh corner of wire. After that I went over each individual fret with 1000 grit sandpaper to remove most of the scratches from the recrowning tool(and smooth the beveled edges) and followed that with 0000 steel wool, this removed the minuscule scratched left from the 1000 grit and left me with shiny frets. Finally, I gave my frets a quick acetone bath to remove any remaining sharpie, thus completing my fret board.
Quinn's Guitar Building Blog 