parametric pen —

Founded parametric pen models & stl files for printing
Ludicrously parametric planter
ConceivablyEngineering
Parametric Pen
Laird Popkin
Pen Holder
Nitro3D
Pen Ladder
Aeronaute
Pen Holder Tube Storage
ZachMakingStuff
Pen made of Safety Pins
Tom Anderson (The ReaL NEO)