I had a fin box failure today. On my first wave I turned and pushed my board into the water and my fin hit the reef. The board felt strange and when I turned my board over half the box was sticking out. The bottom of the box separated from the sides. With the heel of my hand I pounded it back in and surfed another hour. I'm not sure if it was all the box or if I had an install issue. I made the board a few months ago and have ridden it quite a bit with no problems. I did lightly sand the fin box before installation but I didn't clean it with acetone. I wonder if the sides didn't stick well and the bottom did. I used 4 ounce cloth and the board is poly. Has anyone seen this before?
For the repair I plan on routering out the bottom of the box, sanding the sides a little (so I have space to put cloth in again), cleaning with acetone, and installing a new box. Anyone have any other suggestions on how to get the bottom of the box out? I'm open to all suggestions.
Thanks
