Laser Cutter Z Carriage

Add a Z carrier with 37mm of travel to an Eleksmaker type mini engraver. You need to upgrade the controller to Arduino Uno, with a four stepper shield to be able to run Laserweb
BOM:

1 x NEMA 11 Stepper motor
2 X 6mm Diam x 100mm SS guide rods
4 x LM6UU 6mm Linear Ball Bearing
GT2 Timing Belt and 1pcs GT2 Timing Pulley 16T
1 X limit switch

For X axis it uses a round NEMA 14 Stepper

Note: Limitation - without power to Z stepper motor, the Z carriage will drop - you have to adjust