Laser Alignment (Large Aperture Optics) – Fusion Pro

To ensure your CO₂ laser engraver delivers optimal performance and consistent cutting quality, proper beam alignment is essential. Over time, vibration, wear, or component replacement can cause the laser beam to deviate from its intended path. This can result in reduced cutting power, inconsistent engraving, or premature wear of optics.

This procedure outlines how to realign the laser beam by systematically checking and adjusting the position of the red dot pointer and the system mirrors. By following these steps, you will restore a clean, coaxial path for the laser beam, from the tube to the lens, ensuring the engraver operates efficiently and safely.

• Laser Tube
• Mirror 1, 2, or 3
• X-Axis Assembly
• Red Dot Pointer
• Laser power appears weak in certain areas of the table.
• The engraver is unable to effectively cut through materials with known settings.
• Optics in the lens assembly fail prematurely.
• If the engraver has been moved to a new location.

Table of Contents

• Pre-Alignment (red dot alignment)
• Laser Alignment
• Perpendicular Alignment

Pre-Alignment (red dot alignment)

1. Power ON the machine.

   

2. Press the Gear icon.

   

3. Select Alignment.

   

4. Clear the bed of any material, and select Bottom Right.

   

5. Apply masking tape to the alignment target, and insert target into carriage.

   

6. Close all doors.

7. Tap the activate button 2-3 times and watch for a burn mark on the tape.

   

   Note: If the laser alignment is significantly off, you may be unable to achieve a burn mark in position 4 (bottom right). If this occurs, try positioning the carriage in the top left (home position), and tap activate. Align the red dot to the burn mark, then move to the bottom right position and attempt the process again.

8. Turn on the red dot pointer, and verify the red dot and burn mark are in same position on the alginment target.

   
   
   

   Note: If the red dot pointer and burn mark are aligned, skip to the Laser Alignment section.

9. If the red dot and burn mark are not in the same position, you will need to adjust the red dot pointer.

   
   

10. Remove mirror 1 access panel.

11. Using the two 3/32″ adjustment screws on the red dot, move the red dot to the position of the burn mark.

    Note: Keep the carriage in the same position where the burn mark was made. The key to this step is getting the red dot and burn mark in the same position, not their overall location within the alignment target.

12. When the position of the red dot matches the burn mark, remove the masking tape and continue with the laser alignment.

    
    

Laser Alignment

It is essential that the cutting laser and the red dot pointer are perfectly aligned (coaxial) before beginning this process. If the red dot pointer and cutting laser are not in the same position, you will be unable to properly align the laser.

For alignment purposes, the table of the engraver is separated into four (4) quadrants or table positions. The location of each quadrant is determined by its relative distance from the laser.

Mirror Locations

There are four (4) mirrors that may need to be adjusted in order to align the CO2 laser. Each mirror is referenced by a number and corresponds to a specific table position. Only adjust the mirror that controls it’s corresponding position.

1. Remove left side panel.

2. Remove mirror 2 access panel.

3. Press the Top Left button on the display panel.

   

4. Adjust mirror one (1) to center the red dot within the alignment target in position one (1).

5. Press the Bottom Left button on the display panel.

   

6. Adjust mirror two (2) to center the red dot within the alignment target in position (2).

   Note: In some cases, you will need to move between positions 1 and 2 several times. Ensure that the correct mirror is being adjusted for each position.

7. Press the Top Right button on the display panel.

   

8. Adjust mirror three (3) to center the red dot within the alignment target in position three (3).

9. Press the Bottom Right button on the display panel.

   

10. Adjust mirror three (3) to center the red dot within the alignment target in position four (4).

    
    

    Note: In some cases, you will need to move between positions 3 and 4 several times. Mirror three adjusts both positions.

Perpendicular Alignment

The objective of perpendicular alignment is to align the laser through the lens tube. The path must be perpendicular to the table and centered through the lens tube. This is acomplished by carefully adjusting mirror four (4).

1. Press the Center button on the display panel.

   

2. Remove air assist tubing from lens.

3. Loosen thumb screws and flip cover up.

4. Insert manual focus tool into lens nut and loosen lens.

5. Remove lens.

6. Raise the table.

7. Turn on the red dot pointer.

8. Place the target on the table centered under the red dot.

   

9. Lower the table approximately three (3) inches.

10. Adjust mirror four (4) to center red dot within the target.

    Note: There are three (3) adjustment screws on the top of the mirror housing. The diagram below depicts how they adjust the red dot.

    

11. Install lens.

12. Insert manual focus tool into lens nut and tighten lens.

13. Loosen thumb screws, flip cover down, and tighten thumb screws.

14. Install air assist tubing on lens.