PCB Manufacture – Part 2
So after a bit of experimentation, turns out its less the strength of the sodium hydroxide that matters, more the temperature. Using a water bath at ‘slightly warm’ (technical term :P) with a 1.5% solution, the board developed perfectly. This is after 8 minutes in the exposure box, but still, thats a 10mil trace its […]
PCB Manufacture – Part 2 Read More »