Bumper for old pinball machine Guillaume.Cabrie2018-08-18T22:50:31+02:00 Project Description 0 November 4, 2015 Reverse Engineering of old pinball machine parts. This project was to design a copy of a broken bumper and to print a new one. We used double extruder machine with two different materials to print this geometry. MastodonTwitterFacebookLinkedInRedditWhatsAppEmail