Fiddleblock pulleys

A custom fiddleblock double pulley suitable for 3/8 th inch ( 10 mm ) rope. I designed this for my sail boat. Printed in PETG with 6 walls for strength. I would not trust this to have a working load greater than 40lbs. I would not use PLA either as it is prone to sudden failure. Requires 2 bolts 6mm or 0.25 in.