Here is a step version With ajusted sheev, You should still ajust tolerances based on your materials and machine.

One block. Multiple configurations.

I got tired of carrying a mountain of spares to replace broken sailing blocks, And the one that breaks is alway the one I dont have a spare for, so I engineered a solution.

This is a modular sailing block designed to replace snatch blocks, triples, sheeve blocks and much more.

I made a deep dive video on the mechanics and load-testing results.

https://youtu.be/2efa3epOGgY