0

Making 2-Layer Circuit Boards with a Laser Cutter

Making 2-Layer Circuit Boards with a Laser Cutter

I’ve kind of been obsessed with trying to make circuit boards on my laser cutter since I got it. Other people had already done this by using spray paint as resist – then laser-etching the paint off non-trace portions of the board. This process still requires chemical etching – which I’ve been trying to avoid.

I had some success several months ago – making crude PCBs by laser cutting thin steel – but those boards aren’t good enough for surface mount components or anything complicated.

So – if I can’t make good boards without chemical etching – I figured maybe I could use chemicals in conjunction with the laser cutter to make some decent 2-layer boards.

After a few failures – I came up with the process documented in the video. It works pretty well! I suspect if streamlined a bit – you could go from Eagle to working board in under 90 minutes.


Stop breadboarding and soldering – start making immediately! Adafruit’s Circuit Playground is jam-packed with LEDs, sensors, buttons, alligator clip pads and more. Build projects with Circuit Playground in a few minutes with the drag-and-drop MakeCode programming site, learn computer science using the CS Discoveries class on code.org, jump into CircuitPython to learn Python and hardware together, or even use Arduino IDE. Circuit Playground Express is the newest and best Circuit Playground board, with support for MakeCode, CircuitPython, and Arduino. It has a powerful processor, 10 NeoPixels, mini speaker, InfraRed receive and transmit, two buttons, a switch, 14 alligator clip pads, and lots of sensors: capacitive touch, IR proximity, temperature, light, motion and sound. A whole wide world of electronics and coding is waiting for you, and it fits in the palm of your hand.

Join 12,000+ makers on Adafruit’s Discord channels and be part of the community! http://adafru.it/discord

CircuitPython 2019!

Have an amazing project to share? The Electronics Show and Tell with Google Hangouts On-Air is every Wednesday at 7:30pm ET! To join, head over to YouTube and check out the show’s live chat – we’ll post the link there.

Join us every Wednesday night at 8pm ET for Ask an Engineer!

Follow Adafruit on Instagram for top secret new products, behinds the scenes and more https://www.instagram.com/adafruit/


Maker Business — SiFive is a startup to pay attention to. RISC-5 is here to stay.

Wearables — Swatch it up

Electronics — Code like everyone’s watching

Biohacking — Stroboscopic Visual Training

Python for Microcontrollers — CircuitPython takes flight! All aboard with datum, Bluefruit CPX, and more! #Python #Adafruit #CircuitPython #PythonHardware @circuitpython @micropython @ThePSF @Adafruit

Get the only spam-free daily newsletter about wearables, running a "maker business", electronic tips and more! Subscribe at AdafruitDaily.com !



2 Comments

  1. Just on a side note: copper fumes are highly toxic. So be careful and have perfect ventilation.

  2. Assuming the registration is still solid post etch, I wonder if the laser would proficiently remove the FR4 from the through holes. That should 1) eliminate tooling, 2) produce cleaner holes.

    You could probably even increase the annular ring ID to allow for more registration slop.

Sorry, the comment form is closed at this time.