The Z Brace for Prusa MINI 3D printer makes a great printer even better. It drastically improves the rigidity of the frame and more specifically the X axis by making it parallel to the printing surface. This provides a flat perfect 1st layer and results in beautiful prints overall.
Comes in the incredibly strong and stiff Black CF-PETG by Protopasta and has a complete set of nuts, bolts, and an aluminum calibration block. Instructions and video are provided.