Warning! 

• Wear safety goggles during the entire aligning process.
• Avoid attaching the tape directly to the mirror.
• 8 mA or 11% should be sufficient to leave a clear mark without setting the testing tape on fire.
• Always make sure the path is clear between the laser and its target. Never allow foreign objects between the laser and its target. Always close the cover before firing the laser. Do not look directly at the active laser through the cover during this procedure.

The laser beam reflected by Mirror 1 and then Mirror 2 will then hit Mirror 3. This means that when the laser tube is properly aligned to Mirror 1 and Mirror 1 is lined up to Mirror 2, aligning Mirror 2 will align it to Mirror 3.

Tools Needed: Masking Tape

Step 1: Attach a piece of masking tape to the frame of Mirror 3.

The part indicated by the green arrows: Mirror 3 Setscrew
The part indicated by the blue arrow: Mirror 3 Frame
The part indicated by the red arrow: Mirror 3

Step 2: Put on safety goggles, turn on the machine, and set the power level to 11% or lower.

Step 3: Close the cover.

Step 4: Fire the laser.

Step 5: Check that the burnt hole on the tape is at its center.

If not,

Step 6: Cut the power to your laser.

Note: If the last burnt hole is way off-mark, you may need to loosen the mounting bolts of Mirror 2 to slide it into a better position before fine-tuning the setscrews.

The parts indicated by the red arrows: Mounting Bolts

Step 7: Turn on the setscrews of Mirror 2 carefully to adjust the angle and position of Mirror 2.

Note:

• Each screw adjusts to a different position or angle.
• Keep track of which screw you are adjusting and the direction of adjustment.
• Do not turn the screw more than ¼ turn at a time. Test the position of the laser after each adjustment so that you learn the effect of each change.

Step 8: When finished with adjusting the setscrews of Mirror 2, repeat steps 2–7 until the burnt hole falls perfectly at the center of the tape on Mirror 3.