I remixed the 'Bolt sorter' of JavyJavy [https://www.thingiverse.com/thing:4695864]:"Sorting tool for Bolts and Nuts Metric incl… | 3d printer, Printer, 3d printing
DIY Nut sorting machine - YouTube
In-Cam-Sieve-able: The screw, nut, and bolt sorter by amoose136 | Download free STL model | Printables.com
Montessori Nuts and Bolts Board: DIY and Lesson Plans • Mamaguru
ONE - Inspection and Sorting Machine for Nuts and Washers - YouTube
In-Cam-Sieve-able: The screw, nut, and bolt sorter by amoose136 | Download free STL model | Printables.com
Screw Bolts Nuts Fasteners Optical Sorting Machine - China Sorting Machine and Packing Machine
I made a 3d printed nut and bolt sorting machine - Other - Chief Delphi