I am a Senior Instructional Technologist at a four-year university in NYC. In the spring of 2014 I gave a two part talk about tech trends in education, one of which was 3D printing. Last year our office in the Bronx got a 5th gen printer from Makerbot and spring 2015 my office in Manhattan got a Z18 printer. I collect links about 3D printering here: https://flipboard.com/@treglia/3d-printing-vndsaisiy. I update the page on my tech trends wiki on 3D printing here: http://techtrendsineducation.wikispaces.com/3D+Printing. For the most part we have been downloading and printing designs that are posted on Thingiverse but we have recently begun using Tinkercad (online) to create customized builds for faculty interested in using 3D printing in the classroom.