3D printed gear from PA12 nylon for paper shredder 
Rexel optimum autofeed+ 225m
Material: Nylon  with carbon fiber 

Number of teeth on big side: 34 Diameter: 72 mm
Number of teeth on big side: 11 Diameter: 20,7 mm
Total height: 15 mm

We can also make any gear for paper shreadder

 All gears was tested.