10.5" Longboard Fin Box Template - Bahne Box - Fins Unlimited
thingiverse
This is a template for a generic 10.5" surfboard fin box. Also called a bahne box, US style finbox or fins unlimited. Basically the most common fin box system. You will need a 1/4" router bushing (I.D. 1/4" (6.4mm) O.D. 5/16 (7.9mm)) and a 1/4" straight plunge cut router bit. 1/2" bushing and router bit would work too. Milescraft Router Bushing Kit: https://www.milescraft.com/product/metalbushingset/
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