DC next time I do one ill post some picks in the build along section. Or in one of my build/help along threads. I basically cut the riser an inch or half inch to long on the ends and a tad bit wide. Mark out the curve using the R/D bow out of the form and cleaned up. Clamp it down and rasp it pretty close. Then take two boards screwed together at a 90 with a long piece of sandpaper stapled to one. Then lay the riser on there and work it across the sandpaper, when its through cut to length. Its basically a Fred Flintstone edge sander. Time consuming but very effective .