This is a Laser Rotary you can use in 2 Ways. One is with a GT2 Belt the ohter just with a coupling. Also you can use bearings with a outer diameter of 21 or 16, 608zz or any skateboard or fidget spinner bearing (i stole them from my doughters fidget).

This Version also includes the risings of your laser, if you have one build with 2040 extrusions.

The laser i use is also half own desingned half a remix.

Simply take the cable of your Y-Axis and change the steps to about 40.

all you need: -Nema17 -2 x 350mm M8 Rods -Timing Pulley -M8 nuts -M4 T-Nuts -1x200mm GT2 Belt or a Coupling -4xBearings 608zz for example -4xO-Ring 30-40mm diameter

You can realize this Project for about 10 € (without the Nema17)