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- Bottom Sanding Grunt
- Posts: 6
- Joined: Sat Oct 31, 2020 4:25 pm
- Boat Name: Nori
- Boat Type: Alberg 30
Now that I’ve removed some unnecessary thru hulls, I’m about to start grinding/prepping the holes for fiberglass. I’m getting conflicting opinions on “how far out from the hole” I should grind, and “do I need to dish out both sides(interior and exterior)” of the hole. Thoughts?
- Moderator | Revitalizer of Classics
- Posts: 258
- Joined: Thu Jul 12, 2018 7:48 am
- Boat Name: Atom
- Boat Type: Pearson Triton
Grinding a very wide bevel outside increases the work and makes fairing more difficult. I grind a bevel about 4" back all around and don't bevel the inside. On the inside I add several layers of cloth about 12" square and that strengthens the outside patch so that you don't need to go to an extreme wide patch outside.