Reprap, Plus-sa (large build prusa)

This is a moderately larger 3d printer based on the ever popular Mendel, Prusa.

The build envelope in mm is 300,250,150 (x,y,z respectively).

There are a lot of subtle differences in this design that I made to suit my own needs. For instance; the
X-ends are interchangable and lock onto the smooth rods from the sides to prevent splitting along layers.
And the A-side threaded diagonal rods are outside of the front and rear cross rods for better clearance
with the extruder at high z-limit. I reconfigured the vertexes to make that possible.