Solutions for Laser Engraving Centering Issues of Beveled Edge Medallions (Summarized from User Experience)

1.Quick Debugging & Verification Methods (for quickly locating problems)

• • Marker Positioning Method: Cover the processing surface (such as the surface of the medallion) with black using a fat permanent marker, and use the laser to do a light test engraving, so that you can directly see the actual engraving position; clean the surface with acetone after the test
  • Benchmark Verification Method: Do a quick marking on a metal business card, then compare it with the framing range of the laser to confirm whether the mark matches the framing position, and adjust as needed

2.Fixture Making Solutions (to solve the centering problem)

• • Simple Fixture: Use several layers of blue painter’s tape, set the laser parameters (travel speed 40-50 mm/sec, 8-10 passes) to cut a positioning hole that fits the medallion exactly; if the tape catches fire, increase the speed properly
  • Batch Processing Fixture: Etch a positioning fixture from thin metal, and cut out openings for fingers to take out the medallions; or use thick pressed cardboard, burn a hole of the exact size of the medallion with a laser, and the medallion will be automatically centered when placed in the hole

3.Equipment Troubleshooting Directions (if the above methods do not work)

• • Check the parallelism of the laser head and the workbench: Even a deviation of only 0.010 inches will make the engraving of the beveled edge look off-center; use an indicator (instead of a digital level) for measurement, and judge whether the laser body is level by the height difference of the engraving depth, record the difference between different positions for adjustment
  • Check other parts of the laser equipment: For example, the position deviation of the laser tower. After replacing different lenses, the positioning deviation may change, which requires multiple tests