Omtech USB3020A User Manual page 34

5.3.3 2nd Mirror Alignment
After ensuring the laser is well aligned between the 1st and 2nd mirrors, check the alignment between the 2nd and
3rd mirrors. Gently move the X axis rail along the Y axis to send the 2nd mirror to the back of the bed. Gently move
the laser head along the X axis to the far left. Repeat the steps and adjustments above, taking care to use the tape
on the mirror's frame and not its surface.
Gently move the laser head along the X axis to the far right. Repeat the steps and adjustments above, again taking
care to use the tape on the mirror's frame and not its surface.
5.3.4 3rd Mirror Alignment
After ensuring the laser is well aligned between the 2nd and 3rd mirrors, check the alignment between the 3rd
mirror and the workbed. Place a piece of tape across the bottom of the laser head and press it onto the nozzle with
some force. This will leave a ring mark that can help you check the accuracy. Repeat the steps from §5.3.1. If the
laser is not centered through the laser head, adjust the 3rd mirror's set screws accordingly as in §5.3.2. Test again
until the beam is well aligned and retighten the nuts on the set screws.
31