Complete Z Axis for laser

Complete Z-axis mechanism for a laser with height adjustment. The mechanism is adapted to a 2040 aluminum extrusion. I used an 8 mm trapezoidal screw and 8 mm diameter aluminum tubes as guides. The M4 holes in the gantry plate for mounting the frame are threaded. The M3 side holes in the sliding block are also threaded. However, I think a better solution would be to use appropriate thermal nuts. The holes in the head holder must be adapted to your laser. I use a Laser Tree with 20 W optical power and a weight of 620 g.

Printing parameters:

• - PETG material – 131g 
• - 0.4 mm nozzle
• - number of walls – 4
• - infill – 30%
• - layer height– 0.24mm

Required materials:

• - 8 mm trapezoidal screw, length 135mm – 1 pc
• - 8/6 mm aluminum tube length 114 mm – 2 pcs
• - M4 x 12 mm screw – 4 pcs 
• - M3 x 12mm screw – 4 pcs.
• - Thin screw for securing the trapezoidal nut to the block – 4 pcs.

Assembly sequence:

• 1. Screw the frame (2) to the gantry plate (1) with M4 x 12 screws.
• 2. Attach the wheels (3).
• 3. Screw the trapezoidal nut (5) to the bottom of the sliding block (4).
• 4. Insert the trapezoidal screw (8) through the hole in the frame (2) and screw it into the block (4).
• 5. Place the washer (7) and knob (6) on top.
• 6. Place the lock collar (11) on the bottom.
• 7. Insert the guides (9) and secure with the caps (10).
• 8. Screw the laser to the head holder (12) and secure the entire assembly to the block (4) with M3 x 12 screws.