cOssel is a Rostock/Kossel derivative. It does a few things differently from the delta herd, but maintains the core. It equips:
OpenRail for linear motion
Dual hot end configuration
Bowden extruder designed for geared steppers
Mechanically fixed heated bed, vs. binder clips
Detail, images, BOM, & brief video, here: http://reprap.org/wiki/COssel. Assembly instructions in work, though most images complete and posted.
RP print plates, laser cut plate, and assembly .STEP filed attached here.
Individual RP files may be found here: https://github.com/cdaringe/cOssel.
Individual laser files may be found here: https://github.com/cdaringe/cOssel.
View the BOM on the RepRap wiki.
Source your vitamins.
Print the RP from the github or the plates posted here.