In-line headphone amplifier

Step 5 Whittle a circuit board

A small (jewellers') screwdriver was sharpened into a chisel and a recess dug out of the component side of the circuit board. This board is made of paper laminated with phenolic resin, and it cuts with the chisel very easily. And I like the feel of cutting through it - absolutely unnecessary for the proper functioning of the circuit, I am sure, but it gives me something to do and makes the finished product look as if somebody spent some time on it.

This might be realised, for bulk manufacturing, by laminating laser cut paper and foil.