Usage of the New Laser Machine
Controller: BJJCZ FBLI-B-LV7
Source: DAVI CO2 RF 40W
The machine is primarily used for manufacturing seals and stamps. During operation, some issues were encountered, and several improvement proposals have been developed.
Need for Additional Settings for DAVI CO2 RF Source
These sources differ from conventional CO2 tubes notably by incorporating GALVO technology, which combines the advantages of both CO2 and GALVO technologies.
Currently, the interaction with these sources is limited, as the system only allows configuration using the GALVO mode while neglecting the full capabilities of CO2.
For example, there are no settings for power control or for adjusting power according to grayscale levels.
Required Enhancements for Full Utilization of DAVI CO2 RF in LightBurn
- Professional tick module with flexible control for each brand/module,
- First pulse control parameters,
- Integration of hardware parameter monitoring for the RF tube,
- Support for custom RF modes tailored for different material thicknesses and densities,
- Advanced templates for multi-step engraving and field error compensation.
These enhancements will provide an industrial-grade interface, enabling professionals to fully exploit the capabilities of DAVI CO2RF for marking, cutting, and precise engraving tasks.
Limitations of LightBurn for Stamp Manufacturing
The current functionality in LightBurn for stamp production is poorly realized. The RAMP mode functions relatively but with substantial deficiencies.
Proposal for a Dedicated Stamp Mode
- Add nested templates and Ramp optimization for automatic calculation of wall slopes. Currently, the “Ramp Length” setting allows manual adjustment of slope width; professional production demands intelligent calculation based on line thickness and image density.
automatically divides the set Pitch offset into 16 levels on one side of the letter and 16 levels on the other side.
Each level is assigned its own laser power value. See the example power distribution table.
LEVEL_1 = 0
LEVEL_2 = 6
LEVEL_3 = 13
LEVEL_4 = 19
LEVEL_5 = 26
LEVEL_6 = 33
LEVEL_7 = 39
LEVEL_8 = 46
LEVEL_9 = 54
LEVEL_10 = 59
LEVEL_11 = 66
LEVEL_12 = 73
LEVEL_13 = 79
LEVEL_14 = 86
LEVEL_15 = 93
LEVEL_16 = 100
The further from the center of the letter, the higher the burning power. Thus, a slope is formed on each side of the letter.
If you change the slope profile of the letter using the Adjusting Bar, the laser engraver driver will automatically select a new power value for each level according to the new slope profile.
In this way, during the laser engraving process of a stamp, the laser engraver automatically adjusts the laser tube power for different engraving areas.
- Implement the “Anti-Shoulder” parameter—automatic correction of rubber overflow on edge elements to prevent blurry prints in fine stamping.
- Introduce an automatic “Deep Fill” mode for cutting thicker layers of rubber/polyurethane, gradually reducing power at the edges to prevent deformation and thermal cracks.
- Enable the use of sublayers for sequential preliminary engraving, cleaning, and final contour cutting—this results in better stamp volume quality and detail clarity, combining deep and standard filling techniques.
- Expand the auto-contrast mode for original images: automatic conversion and inversion of source layouts into negatives, intelligent line smoothing, and creation of additional support lines in weak stamp areas.
- Add a separate mode for seals featuring microtext and complex logos (filtering and layer separation) ensuring a highly detailed print without element loss.
Parameters for Implementation
| Parameter | Description | Practical Benefit |
|---|---|---|
| Ramp Length (automatic) | Intelligent wall slope calculation | Precision edges and support for fine elements |
| Anti-Shoulder Correction | Rubber overflow correction | Clear imprint without blurring |
| Deep Fill Mode | Multi-step deep filling | Cutting thick stamps without shifting |
| Sublayers (multi-step) | Engraving, cleaning, and cutting | Cleaner detail and dense structure |
| Auto-negative/contrast | Inversion/enhancement of fine details | Automated preparation of layouts |
| Microtext Mode | Processing of ultra-fine lines | Seals with microtext and complex logos |
The following are the software settings for Stamp Mode.
