I found these two upgrdman videos.
PCB etching, or rather routing, via CNC, as opposed to using Ferric Chloride, is not too different from 3D printing, with respect to the equipment (hardware/software)…
In addition to routing, if you prefer the old fashioned etching, CNC can be used to mark out the traces using a pen, instead of having to print the PCB masks using photosensitive boards…
A colleague and I have been trying to reverse engineer a few different PCBs recently (a coin operated washing machine’s control board (see Reverse engineering the coin box) and a Bastl Trinity are a few examples) and we have been scanning them or simply photographing them, with the aim of either copying them, coming up with a schematic or coming up with a PCB mask, with mixed or limited results. Like this:
After watching EEVblog #675 – How To Reverse Engineer A Rigol DS1054Z, I saw that Dave explains a pretty good process, using a tripod mounted camera, light box and a back light.
The PCB masks from the amazing book, Sound Synthesis – Analog and Digital Techniques, by Terence Thomas.
Metal Core Printed Circuit Boards (MCPCB) are used to keep high powered LED circuits cool, as the metal substrate helps dissipate heat generated by the LEDs.
However, they can also be used, as an alternative to FR4 PCBs, to create heavy, sturdy and funky PCBs for audio applications, especially if a thick 5-10 mm substrate is used (although 3.2 mm is the common maximum thickness – see below).
I got the idea after seeing this question on StackExchange: Custom/DIY Metal-Core PCB? However, MCPCB is really only useful for SMD components. Standard discrete components would need to be routed via the underside, and there would be a potential for short circuits caused by component legs coming in contact with the metal substrate.
Feature image taken from Metal Core PCB vs standard circuit boards.
Following on from ArduinoBoys and others, I was having a bit of a job getting the PNG of the ArduinoBoy PCB by Trash80 (with Gameboy Genius’s fix Fixing Gameboy-powered Arduinoboy MIDI glitches) to convert to PDF with the correct scaling, in order to send to Layer Circuit, as mentioned in PCBs in BKK.
Need to get some PCBs made, preferably from Eagle
.brd files, but not everyone accepts them and they want PDFs instead.
Following on from Making your own PCBs