bolt box a simple to print but hard to solve 3d puzzle —

Founded bolt box a simple to print but hard to solve 3d puzzle models & stl files for printing
Card separator
DocKuro
Tape hanger
simplyHong
Simple cable hook
Dutch_Engineer
Simple 20x20x20mm cube
Phillip Skoric
filament guide for Prusa i3
Hirotoshi Tawara
Simple Funnel
Dave3dDesign
Door Hook
Grahamcracker