Ball Bearing Ratchet Block

Uses 6mm airsoft pellets as balls. Suits 10-14mm line or thereabouts. 

Uses countersunk m4 bolts to hold together, and the chank of an m8 as a pivot. Print one of everything except for the pawl, of which you need two.

Survived a few sails, then had the sheave split. I think one of the pawls caught and the other side didn't. So the uploaded CAD files has been reinforced in that area, but we haven't had any good sailing weather since I've updated the CAD, so I haven't tested the new variant.