Fiberglass sanding

[spareparts]

i usually spray over 220( put plenty of gel on it, you'll end up sanding most of it off)), quickly block out the gel with 400 dry, wetsand with 400 on a frim block, switch to 600, then 800, 1000, then 1500. Don't spend too much time on each grit, just sand out the previous grit scratches and move to the next. I then buff with 1500 compound, finish up with 2000 by hand and wax with a soft cloth.