Polyjet printing, a technology which certainly makes FDM based printers look like child's play. What if I told you that soon, the $300k machines offered by Stratasys could be available for under 10,000 Euro? Would you believe me? When One Professor at Cologne University thinks so and for a Master's project for one of his courses he has asked students to create a sub 10,000 Euro polyjet printer. More details on this project can be found here: http://3dprint.com/9577/10000-polyjet-3d-printer/

Sure, the Stratasys technology is patented, so that brings around a whole slew of issues, but the fact that this could be possible to me is pretty cool. Below is an image of one of these concepts submitted by students: