Lay the brass coin flat on the laser bed with the marking surface facing upward.

Make sure the coin is clean and free of fingerprints, oil, or dust, as surface contamination can affect the final marking quality.

Import your vector or image file into LightBurn, then adjust the placement to match the coin surface.

For 3D relief laser marking, image quality has a direct impact on the final result. A depth image, such as the bee design in this project, is ideal for creating a 3D effect.

For easier positioning, use a frame tool layer to outline the coin. Measure the brass coin, draw a circle that matches its shape, and place the depth image inside the circle.

Check the parameters carefully to achieve the desired 3D brass coin result.

For this project, bi-directional scanning is turned on to save time. Brass coin marking also requires high DPI, so the 3D image layer uses 1270 DPI and the character layer uses 2540 DPI. For the relief layer, choose 3D Sliced image mode.

Relief laser marking may require dozens or even hundreds of passes, so do not be surprised by high pass counts. Always confirm that the settings are correct before starting.

Focus is the key to success. If focus is ignored, the final result may not be satisfying.

Make sure the brass coin surface is properly focused before starting. You can use auto focus or manual focus. If you prefer manual focus, the focal stick must be in close contact with the coin surface.

Press the Frame button and check whether the red light shows the correct marking area. The frame should match the brass coin surface.

If the frame is not aligned, move the coin or adjust the design until they match. After checking, close the laser door and begin Aurora Lite’s 3D brass coin laser marking process.

Stay near the machine and monitor for unusual sounds, alarms, or abnormal conditions during processing.

Since 3D brass relief marking can take a long time, you may do other work in the same room while the machine runs. Avoid staring directly at the marking point for too long, even with the door closed.

Once the marking is complete, allow the coin to cool for a few minutes, then carefully remove it from the laser bed. Inspect the marking depth, clarity, and consistency.

3D metal relief marking produces a lot of powder. Clean the finished coin and the inside of the machine after processing. You can brush the coin under running water with a soft toothbrush. For the machine, clean the lens with 99% alcohol and a dust-free cloth, wiping in a circle from the center outward.

For a stronger visual result, soak the cleaned brass coin in a copper blackening agent for more than 15 minutes, then clean and polish the coin.