http://sculpman.com/product

This company makes a nozzle that converts 2.85mm filament into a ribbon which can adjust from 0 - 10mm. The bad news is that they only want to work with companies, as told in their Contact page.

The SecSavr and the #Polar Cartesian Hybrid with "rotating nozzle" (where I found out about this nozzle) wouldn't need the rotating axis on the hotend, but the creation of the nozzle is out of my element. My uni made a hotend that prints tubes that they just showed off at TCT 360 (though I'm sure more people saw the hangprinter drone) so the probabilityof obtaining a solution for a ribbon nozzle is low but not 0.