About this 3D model

look in the PDFs for the link to a video that will show you the answer this guy shows you how to make one with wood and how to solve don't cheat try and figure it out your self have fun:) you will need to find a piece of string (I think a foot is good) and print 2 of the beads and blocks! if you want to save your filament you can scale it down and it will still work! Comment your time!