Delta Printer (Upsilon 3D Printer) linear rail

a two year project to create Delta printer. it has 6 machined parts and
the rest are purchased or printed on another 3d printer.
I have a 4 page bill of material with sources. all files on github.
https://github.com/deltagreg/OPEN-DELTA. a source for machined
parts is available through our web site. http://opendelta.net/
there are two sub ass'y in files you need adobe pdf to open the you can
rotate