Model originally uploaded to Thingiverse at https://www.thingiverse.com/thing:4916143.

Bought a new Ryobl weed trimmer and noticed it took a special tool to wind the trimmer string onto the spool. so i made a copy just in case mine broke or i lost it. its not exactly the same but it does the trick for me. the handle is meant to be held on by a single screw and float so u can crank it in circle. used PLA .2mm supports needed only for cap handle, main unit prints without.