"Dragonfly" gravity knife, utility knife

This is a gravity knife with a unique mechanism inspired by AGA Campolin Dragonfly Gravity Knife The knife holds standard utility blades, which are easily swapable. I have also included a version with a 3d printed blade. *** Update 13.2.2026Modified the blade holder slightly:→ blade is now seated more securely→ Open position of the knife is now sturdier→ Allows slightly out of tolerance blades to fit the knife, without hitting the back pin*** The assembly is really simple:The mechanism might need a little breaking-in by wiggling back and forth.I suggest adding a drop of lube to the inner side of the pins, but it will work without it: The correct blade dimensions (standard trapezoid blade): Check out my other gravity knife model!“Tri-Fold” gravity knifeBoost MeIf you enjoy the model, consider boosting :)