Routing Boxes
Installing fin boxes and leash plugs with precision
Overview
Routing is where precision matters most. You're cutting cavities into the foam for fin boxes and leash plugs — get it right and everything sits flush.
Detailed Steps
1
Mark positions
Measure and mark fin box and leash plug locations.
2
Set up the jig
Secure the routing template to the board.
3
Route the cavities
Use a router to cut clean holes for the boxes.
4
Glass in the boxes
Set boxes with resin and cloth patches for strength.
Technical Specs
Common fin systemsFCS, Futures, or traditional glass-on
Leash plug positionTypically 3" from the tail
Router bit sizeVaries by fin system
Expert Tips
“Measure three times, route once.”
“Make sure the board is completely level before routing.”
“Keep the router moving steadily — pausing can burn the foam.”