About this 3D model

check out version 2: https://makerworld.com/en/models/142966 Assebly demo: tested guitar string tuners. they work great for nylon strings, for steel strings, I'd say 80%-90%. they tune nicely, but break when the pitch is too high. so I would recommend them for nylon strings. I'll just have to make another improved version for steel strings. IMPORTANT: the slots on the base, sleeve, and worm drive must all be aligned before inserting the locking pin.