helical gear pen cup —

Founded helical gear pen cup models & stl files for printing
Stackable pen box
Steven Mathiasen
The Pen
SquadLeader70
3dp burner pen
Morpheus0010
Simple Gear Customizer
Franky_Bizarro
spinning pen by leo
Kingleo555
Indexing Gear
Jon-A-Tron
3D Printed Antibacterial Pen
Make3D Company Limited