Stratasys Medical Solutions Group, 3D4MD and GrabCAD collaborated to sponsor the “Oxygen Valve Splitter Challenge”, which tasks entrants to design a 3D printable oxygen splitter capable of allowing doctors to provide independently controlled oxygen flow rates to two different patients while allowing them to share a single oxygen tank. The splitter needs to be completely 3D printable on a desktop printer using ABS materials. The deadline for entering the Challenge is January 7th, 2016, and the final winners will be announced on February 11th, 2016. You can find out more about his challenge over on 3DPrint.com: http://3dprint.com/112761/oxygen-valve-splitter/