For the far future of the RepRap, we might be able to make our own microcircuitry in a way that borrows principles from the current silicon manufacturing technologies.
If we have a photosensitive organic semiconductor ink that hardens on exposure to light, and project the image of a circuit (possibly using a PC screen or some other emissive display) onto a substrate coated in it, then the conductive polymer is fixed in place. Wash it and put a layer of another ink on, expose that to a different set of tracks, rinse and repeat until the circuit is complete.
RepRap should enable the production of equipment that can automate this process. Like I say, far future, but we have to get these ideas down in case some antisocial tries to patent them...
Vik :v)
I've used the foil transfer sheets before and, unfortunately, the foil is a terrible conductor and it doesn't take solder.
ReplyDeleteWhat if you use a laser printer print head mounted on a carriage. That would give a 300dip resolution 8" wide and as long as the carriage travel.
ReplyDelete