OMTech Autofocus Sensor Kit with Leadshine Stepper Driver and NEMA 34 Stepper Motor for CO2 Laser Engraver, Cutter, Engraving, and Cutting Machines, Automatic Motorized Z-Axis Up Down Focus

Good quality, well made kit. Lousy instructions! Be comfortable with and have a continuity tester to determine how to connect the four motor wires as the colors don't match the instructions. With the help of some videos I have everything connected and working with the exception of being able to auto focus. Still figuring that out in Lightburn. Installing this kit is NOT a 20 minute job. But the kit quality is excellent and it will be worth it in the end.

Makes laser so much easier to use. Good quality

I ordered this and didn't have a chance to unbox it until the return window had elapsed. I'm sure everything works fine but the motor is huge. Way too big to use with my desktop laser cutter. Well, at least I have one of the leadshine drivers and a medium sized stepper to play with in some future project. I did connect them up and verify that everything is functional. It's just physically too large for the k40 type laser cutter machines.

This will save a lot of time when switching parts