Omtech SH-H1309 User Manual page 25

Power (%)
Current (mA)
The threshold for the lowest setting is 10%. The laser will not fire at any setting lower than this. It is NOT
recommended to use the laser tube at full capacity, especially for extended periods. The recommended
maximum power setting is 70%, as prolonged use above that amount will shorten your laser's service life.
To increase engraving depth, increase the amount of energy per unit area by increasing the laser's power
or the number of loops or by slowing down the speed parameter. Engraving too deep, however, reduces
image quality, especially for coated materials.
When working with new materials, remember that you should always start on the low end of likely
settings. If the effect is not yet strong enough, you can always rerun the design loop several times or rerun
it with more powerful settings until you create the effect that you want.
Resolution should usually be set to 500 dots per inch. Reducing your image resolution can be helpful in
some cases, reducing flaming and increasing the energy of the pulse in a way that improves the quality of
the resultant image in some materials such as some plastics.
Step 9. Release the emergency stop button, press the reset button, and insert and turn your laser key to turn on
the laser tube. To reduce the risk of electric shock, once the laser tube is on, try to touch the engraver with
only one hand at a time.
Step 10. Press Start/Pause to engrave your design. Again, do not stare continuously at the laser even through the
protective polycarbonate window. Watch for possible issues like sparks or fires, however, and be prepared
to quickly extinguish a fire if necessary.
Step 11. Once the laser has stopped, examine the quality of your first run and adjust the laser parameters on the
control panel or in your software as necessary to create the desired effect. During repetitive engraving
and cutting, periodically check your pump's tank to maintain a water temperature below 38°C (100°F). If
this temperature is reached, stop work and allow your engraver to cool before further use. If any interlock
activates as you work, press the reset button to restore power to the laser.
Step 12. When you have finished engraving, close your engraving software and then turn off your machine in
the following order: laser key, emergency stop button, main power switch, and any ventilation or water
cooling system. Fully clean the workbed, emptying any debris from the lower bay.
4.3 Instructions for Specific Materials
The following instructions are suggestions to help speed safe work with a range of materials. The user should
research the specific safety and engraving requirements of their specific material to avoid the risk of fire, hazardous
dust, corrosive and poisonous fumes, and other potential problems. Once the product is known to be safe or
appropriate protective equipment has been set up, it can be helpful to engrave a test matrix of small boxes produced
at various speed and power settings to discover the ideal settings for your design. Alternatively, start with low power
and fast speed settings and rerun your design as many times as needed, using progressively greater laser intensity.
Description
Power
130W
Speed
10 20 30
1–4 7–8 12–14
Average Engraving Settings
Leather
Glass
Real
16% 16%
275 mm/s 450 mm/s
40 50 60
18–19 22–23 24–26
Clear
Acrylic
Artifical
15% 15%
475 mm/s 375 mm/s
21
70 80 90
28 30–31 32–33
Stone & Tile Wood
18%
185 mm/s 225 mm/s
100
33
18%