Category Archives: Processes

Double sided PCBs – aligning the sides for exposure

Jig for aligning mask for double sided pcb

Getting the two sides of an exposure mask to align well when making a two sided PCB is always a pain. With a simple cardboard jig it becomes easier. Quite surprisingly I have not seen this idea anywhere. The usual advise is to make a pouch of the two sides of the mask, but that does not help much when you need to turn the pcb around to expose the second side. Continue reading

DIY home PCB exposure and etching process

etched_pcbIt looks like my diy pcb manufacturing process is working reasonably well, so it’s time to share what I have learned. This covers printing an exposure mask, exposing, developing, etching and drilling/cutting – all the way to a finished pcb. My process is an extremely low-cost one, with minimal tools and supplies needed. The results are not perfect (more on that below), but very much adequate for my purposes, and covers all of my pcb making needs.

Creating an exposure mask

I am using regular office printing paperĀ as the exposure mask. The paper is oiled after printing to make it translucent. Continue reading