Summary

A simple multi purpose X-Y table which can be used as plotter or laser engraver. The four corner pieces are identical and can have a stepper motor or bearing installed. Cover plates keep the bearings in place. Also the left and right slider are identical, they each have one linear bearing. The length of the 6mm shafts is free to choose. Three timing belt pulleys are identical. The pulley attached to the stepper motor has one side that fits to the shaft (6mm), the other side fits to the stepper motor (5mm).
https://youtu.be/e0nVrRS6wNg
X plus Y operation:
https://youtu.be/FgEWTkrm_Ds
See also:
https://www.thingiverse.com/thing:2655181
https://www.thingiverse.com/thing:2668631