Omtech USB3020A User Manual page 25

If you want your design to have a frame engraved around it, select the appropriate shape under Frame.
Step 8. Customize our design's contrast and engraving depth by adjusting the speed, power, and other parameters in
your engraving software or directly through the control panel. Select whether you will be engraving, deeply
cutting, or lightly marking your material.
If your engraving instructions detail the power setting in milliamperes, use the following conversion chart to
find the appropriate power setting:
Power % 8 10
Current (mA) 5 7
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 the engraving depth, increase the amount of energy per unit area by increasing laser power, increasing
loop count, or slowing down the speed parameter. Engraving too deep, however, reduces image quality,
especially for coated materials.
When working with new materials, remember 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 desired effect. Avoid using high power settings at very low speeds
when engraving highly flammable materials.
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. Press Start in LaserDRW to engrave your design. Again, do not stare continuously at the laser even through
the protective acrylic window. Watch for possible issues like sparks or fires, however, and be prepared to to
quickly extinguish a fire if necessary.
15 20 25 30
8 9 10 12
35 40 45 50
13 15 17 18
22
55 60 65 70
20 21 22 23
80+
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