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5.3.2 1st Mirror Alignment
After ensuring the laser is well aligned between the laser tube and 1st mirror, check the alignment between the 1st
and 2nd mirrors. First, gently move the X axis rail along the Y axis to send the 2nd mirror to the back of the bed.
Once set, place a piece of tape on the 2nd mirror's frame. DO NOT place the tape directly onto the mirror. Repeat
the steps from §5.3.1. If the laser is not centered on the 2nd mirror, you will need to adjust the 1st mirror's set screws
accordingly. For larger adjustments, you may need to loosen the mounting bolts at the mirror’s base to slide it into
better position before fi ne tuning with the adjustment screws.
To adjust the mirror, loosen the nut on the screw and then slightly turn the screw either clockwise or counterclockwise.
Each screw adjusts a diff erent 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 and, especially at fi rst, test the position of the laser after
each adjustment so that you learn the eff ect of each change. Test until the beam is well aligned and then retighten the
nuts on the screws once all adjustments are completed.
Next, gently move the X axis rail along the Y axis to bring the 2nd mirror to the front of the bed.
Once set, place another piece of tape on the 2nd mirror's frame. DO NOT place the tape directly onto the mirror.
Repeat the steps from §5.3.1 and, if necessary, adjust the set screws on the 1st mirror. Test again until the beam is
well aligned and retighten the nuts on the set screws.
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