The dream of rapidly prototyping PCBs without the delays of shipping or high costs of expedited fabrication is inching closer to reality. In his video, engineer and maker Stephen Hawes demonstrates the use of a desktop fiber laser, the xTool F1 Ultra, to create a functional single-sided PCB in just 25 minutes—only five of which require hands-on involvement.

PCB etched with a laser
PCB etched with a laser.

Suitable PCB Materials for Fiber Laser

Hawes highlights the use of FR1 PCB material, a less abrasive and easier-to-process alternative to the more common FR4. The fiber laser precisely ablates copper, drills holes, applies solder mask, and even cuts out the board, replicating much of the functionality of traditional PCB fabrication at a desktop scale. While double-sided designs and alignment still present challenges, Hawes’s process shows incredible promise for fast, iterative prototyping.

Although this technique won’t replace professional board shops for most applications, or even much more expensive desktop PCB fab machines, it offers a compelling solution for engineers needing rapid turnaround. For those looking to experiment, Hawes has detailed his process on his GitHub repo, making it accessible to the maker community.

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This breakthrough raises exciting possibilities for engineers and makers alike. Could rapid prototyping like this make desktop PCB fabrication a practical reality? While challenges like double-sided designs and alignment still need refinement, the potential for quick iteration and reduced turnaround times is clear.