Hole puncher and Bookbinding apparatus

I made a paper hole puncher, Applicable to thicknesses of A4 paper and below. Just  one piece of paper can be operated on, not multiple ones together, After all, It is not a metal blade. 
In addition, I made various styles of Bookbinding. Including 3 holes、6 holes、9 holes、12 holes, Choose as needed. Hope you like it and be helpful to you. 

Assembly drawing

Binding Style Recommendation

This model was printed using PLA. (fill in 10%，using a lower layer high (0.16mm)，no support)