Fig. 1–6. Optical path diagram.
Fig. 1–7. Water pump.
Your 3020 laser engraver works by emitting a powerful laser beam from its laser tube, reflecting that beam
off of the three mirrors, focusing its power through the focus lens, and using this focused light to burn designs
into materials. The designs can be quite complicated because the laser head travels back and forth along the
Y-axis guide rail, which moves back and forth along the X-axis guide rail, following the instructions of the
engraving software. The optical path setup ensures that the laser remains well directed at all times but some
routine maintenance is necessary (See 4.1) and the optical path will sometimes require realignment (See 4.2).
1.2 Accessories.
In addition to any optional spare parts you ordered, your laser engraver also includes the following accesso-
ries:
A water pump (Fig. 1–7) used to maintain a stream of cooling water to the laser.
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