Making PCB vias using conductive ink

We developed an alternative method for making PCB vias through-hole using our bot TwinTeeth and nano-particles conductive ink.

The traditional DIY method consists in threading a wire through the holes and then soldering it and then cutting it off. For example, if we have 100 vias in our PCB, we have to insert the wire on each hole, cut it and solder it 200 times. This is time-consuming, but also boring, absurd, prone to failures and produces a melancholic state of mind :-)

So we decide to innovate in this area developing a new method which consists in drilling blind vias instead of through-holes and fill them with copper nano-particles conductive ink.

Really we don’t need holes to make vias. Well, we need holes, but not through-holes. I mean, we can avoid perforating to bottom layer and make tiny wells instead of vias!

The idea is to drill holes but taking care not to drill the bottom copper sheet, in such a way that we make wells instead of through-holes. Then fill the tiny wells from inside, inserting a needle and injecting the conductive ink, mainly because it’s difficult to fill it from outside, due to the air inside the well and also surface tension forces.

It is only a proof of concept but it seems feasible and funny!

More information www.diyouware.com.