paper shredder

I made a paper shredder. It can cut up to 5mm.It has two versions.(A4 version use for cutting paper: width ≤210mm , A5 version use for width ≤150mm ）A4 version is apply to printer bed ≥250 mmA5 version is apply to printer bed ≥180 mmInstallation instruction is shown in the picture.special tips:you need a wallpaper blade, and break off two parts with plier (see picture. ) after inserting blade.( Be careful your hand)The blade must be sharp,and blade point stay out.This model was printed using PLA