i used four grades of sandpaper. starting with 200 just to get the dull off. then 320 to dig in a bit and grind out the bites of the 200. then 400 because 400 is what i default to for most prop sanding. then i jumped to 800 to get it smooth. i could have gone up to 1000, but i just didn't feel like it.
p.s. here's the strangest tip for wetsanding ever: i sat in the bath tub, with the shower going, to sand with the 800 grit.
the biggest problem i've run into is that i was a little more rough than i needed to be and got hairline cracks in the corners of the of the visor. i'm not sure if i want to attempt to repair them topically or if i just want to reinforce the area from the inside with fiberglass. either way i'm going to glass the inside. i just don't want to mess up my finish.
