Like scott danforth said earlier.
here are some links for light reading. start with 14, 15, 18, 19, 2, 3, 4a, and 4b
Found here https://forums.iboats.com/threads/how-tos-and-other-great-information.283508/
4.5" angle grinder with 40grit sanding discs. I think I went through 50 or so. You will...