This is handy for quick prototyping, but it seems that you can't solder on the parts and have to use "conductive double-sided tape or silver epoxy adhesive" instead. To etch a PCB, the typical process is to (1) print a photo mask, (2) transfer it using photolithography or toner transfer, (3) dissolve away the exposed copper, and optionally drill holes. The coolest hack I've seen skips step (1) and (2) by directly "pr…
There was some related method mentioned recently on hackaday too, reportedly somewhat easier, where a guy in steps 1-2 prints with inkjet, and then dusts some toner over the ink and bakes the result in an oven. Never really got into hardware yet, but might help someone:
http://hackaday.com/2013/11/02/perfect-pcbs-with-an-inkjet-p...