AI to 3D Engraved Brass Coin: Step-by-Step Guide
In this video, Justin Laser demonstrates the process of turning an AI-generated image into a 3D laser-engraved brass coin. The tutorial covers the entire workflow, from generating the image using AI to the final polishing of the engraved coin.
The process begins with generating an image using MidJourney AI. Justin uses the prompt ‘boss relief style Viking head with skulls and Viking ship behind it round emblem’ to create a suitable image. Once the image is generated, it is converted into a depth map using a program called Depth-R, which prepares the image for 3D engraving.
To add extra details, Justin opens the image in Adobe Illustrator and adds Rune text around the perimeter. The text does not have any specific meaning as he randomly pressed keys to create the runes.
Next, the setup is done in LightBurn software. Justin uses three layers: a tooling layer for accurate framing on the coin, the Viking image layer with 3D sliced image mode for depth engraving, and a Rune text layer. The specific settings for the engraving include speed, power, frequency, DPI, scan angle, crosshatch, and the number of passes. He also enables a cleanup pass after every two engraving passes to remove dust and enhance details.
The engraving is performed on a 40 mm brass coin using a 60W OMG JPT MOPA laser. After engraving, which takes approximately 54 minutes, the coin is cleaned using a magnetic tumbler with water and burnishing compound.
To give the coin an antique look, Justin uses brass black to darken the deeper areas. He then lightly polishes the raised surfaces with fine steel wool to create contrast. The final polishing is done with a Dremel and felt polishing tip, followed by applying Renaissance wax and buffing it by hand.
The video concludes with a showcase of the final result, highlighting the detailed and authentic appearance of the engraved brass coin. Justin provides links to all the tools and materials used in the video description and encourages viewers to like, subscribe, and check out the provided resources.