"Mr. Power Electronics" used his Prusa I3 to 3d print protective covers the high voltage terminals. Just a useful thing I found while browsing Tumblr.
Project homepage:
http://dopeydavoid.tumblr.com/post/139514893558/3d-printing-is-useful-for-anything-and-everything
Project homepage:
http://dopeydavoid.tumblr.com/post/139514893558/3d-printing-is-useful-for-anything-and-everything