This is an improvement upon the 100% Printable CS:GO Butterfly Knife by 3DCentralVA. While messing with mine, I noticed it felt kind of flimsy and wobbly, so I added enhancements to the grip standoffs, blade hinge, and blade stop.
Brief overview & print/assembly instructions:
https://www.youtube.com/watch?v=IW9T4_wCwTM
Printer:
Anet A8
Rafts:
No
Supports:
No
Resolution:
.16mm
Infill:
10%/80%+
Notes:
This file is meant for PLA, but will work for ABS or other materials if you edit the material settings in your slicer program. Recommended that you look up a tutorial on how to do infill meshes in Cura and apply that information to this model.