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The most important parameters are the focus, power, and speed settings.
Together, they control the intensity of the beam as it contacts your material.
FOCUS
The lens has a focal length of 30 mm (about 1.18 inches) and rests 24 mm above the bottom of the laser module
’
s tube. For surface engraving,
release the locking lever and gently lower the tube to touch the top of the provided tool each time the thickness of your material changes.
This will keep the laser focused at the surface of your material for maximum eiciency. For cutting thicker materials, the focus may need to be
moved lower into the material itself.
POWER
By default, LaserGRBL uses ⅒ percent power settings, so that S1000 is 100%
of the diode’s full power (10W), S750 is 75% power (7.5W), and so on. You can
change this scale using parameter $30 in your GRBL configuration. You can
also limit the power for each design separately by using its S-MAX value.
Unlike CO₂ lasers, your diode can use its maximum power without excessive
wear. Still, start o at the lowest end of expected settings when working with
new materials. If the eect is not yet strong enough, you can always rerun the
design loop or rerun it with more powerful settings.
SPEED
LaserGRBL’s speed settings are all in mm/min, so that F600 is 600 mm/min or
10 mm/s. The speed works with the power to create the intensity of the beam.
Starting out with a material test card can give you a quick overview of what
dierent combinations will look like. You can also use the M4 dynamic mode
for your design to automatically reduce the power when the laser slows or
stops at the edges of the design.
30 mm
6 mm
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