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
1x8 Monitor Stand Legs
Matticus Finch
Bolt Puzzle
mtairymd
3d Butterfly
KySyth
3DPuzzle Ball
HobbyPrinter
3DPuzzle Van der Poel
HobbyPrinter
Hexahedron Puzzle
saulquinn
3d Puzzle
alexanderjunk