A custom cirucuit board? Interesting.
http://3dprintingindustry.com/2016/01/27/3d-print-custom-solder-free-circuit-boards/?utm_source=3D+Printing+Industry+Update&utm_medium=email&utm_campaign=85fe44750c-RSS_EMAIL_CAMPAIGN&utm_term=0_695d5c73dc-85fe44750c-64546709
even better, laser cut it.
a combination of engrave the paths and cut the holes. somebody suggest that some time ago in this community: https://plus.google.com/communities/118113483589382049502