CNC out of a old 3d printer

This project aims to transform an old 3d printer, a clone of the i3 prusa, into a small cnc for engraving small PCBs. Using a motor that I bought on banggood already provided with spindle.
The design is simple but functional, tested!

Motor from banggood: https://www.banggood.com/WLXY-Mini-Electric-Hand-Drill-DIY-Electric-Drill-Drilling-Tool-Set-p-952213.html?rmmds=search&cur_warehouse=CN