wo articles ln 3D printing that push the envelope… Interesting use for a 3D printer! Jay Leno’s 3D Printer Replaces Rusty Old Parts http://www.jaylenosgarage.com/extras/articles/jay-lenos-3d-printer-replaces-rusty-old-parts-1/index.shtml#.T7Ou5Ji_Gvo.twitter “Jay Leno has a lot of old cars with a lot of obsolete parts. When he needs to replace these parts, he skips the error-prone machinist and goes to his rapid prototyping 3D printer. Simply scan, print and repeat.” The Man Who Prints Houses http://neilperkin.typepad.com/only_dead_fish/2012/05/the-man-who-prints-houses.html “Enrico Dini has developed a 3D printing technology large enough to print buildings.