It has been discussed, and is somewhat-planned-for, at least. See the FuturePlans Wiki page [
reprap.org] -- under v2.0 Mendel it says in part:
> Print head capable of printing conductive material to create embedded circuits
Also, on the blog in February, Forrest wrote about experiments with depositing solder. [
blog.reprap.org]
RepRap needs to learn to crawl before it can walk... but if you can help design, build and test a prototype print head with that kind of capability, there will definitely be plenty of appreciative Reprappers!
Jonathan