I built a sub-€200 PCB delayering system in my bedroom — down to 3µm precision (LACED project)

Hey folks,

I’ve been working for months on a technique called LACED — Laser-Assisted Chemical Etching and Delayering — designed to reverse engineer multilayer PCBs using nothing more than:

• a cheap laser engraver
• basic chemicals (NaOH, HCl, H₂O₂)
• a micrometer
• and a LOT of patience.

I’ve documented every pass, micron by micron, and achieved repeatable results with 3–10 µm resolution per layer — all from a home setup under €200.

Why?
Because I believe reverse engineering shouldn’t be limited to cleanrooms and corporate budgets.
It should be accessible, replicable, and inspiring.

Here’s the full documentation, data, and theory behind the method:
? GitHub – LACED: Laser-Assisted Chemical Etching & Delayering

Happy to answer any questions. AMA about the process, the obstacles, or how many times I almost destroyed my PCB.

Cheers,
Lorentio Brodesco