Dao cắt giấy (paper cutter) in 3D

I made a paper cutter ,it used for  cutting paper  and photograph (width ≤150mm) .
Installation instruction  is shown in the picture.
 

special tips:
I need a wallpaper blade, and break off two parts with plier (see picture. ) after inserting blade.( Be careful your hand)

This model was printed using PLA. (fill in 10%，using a lower layer hight (0.15/0.2mm)，no support)