The file 'Compliant Mechanism Dart Gun – Print In Place (With Source) 3D Printer Model' is (f3d,stl) file type, size is 3.3MB.
https://www.youtube.com/watch?v=AG7FOi_86Ec
This is a fascinating mechanism but when I printed the original I saw a lot of room for improvements. Included Fusion360 source so you can play with it and make your own variation. Sized for 1:1 on a Bambu Printer.
This was remodeled from the ground up but used angles and dimensions from the original to make it work.
All love for this idea goes to Mark Rober!
Update: Increased clearances, some people were having problems with parts fusing, added 25% more space. If it still fuses let me know and I can add more, there's plenty of space but depending on your extrusion multiplier you may still have fusing due to overextrusion.
To those saying you can't print it small I have attached a pic of it scaled down to fit in my palm, still operates perfectly. You may need to dial in your printer :)
Compliant_Mechanism_Dart_Gun_v18.f3d | 2.6MB | |
Compliant_Mechansm_Dart_Gun_Dart.stl | 672.3KB | |
Compliant_Mechansm_Dart_Gun_Props3D_Version.stl | 1.4MB |