Tarantula++ obo Prusa

* update 22/01/17* Enclosure for electronic: http://www.thingiverse.com/thing:2055053

This is my design Prusa like 3D printer, largely inspired from Tevo Tarantula.
The goal is best accuracy and precision.

Main features:

Alu profile 2040 for frame and all axis
Printed bracket corner very rigid and making alignment easier
Rails for each axes (MGN12 from Hiwin)
Motors 400 Steps/turn
Dual extruder, dual hotend
Horizontal Y belt with only two pulleys
Z dual motors with leadscrew
Electronic 32 bits MKS SBASE

Parts list:
Aluminium profile 2040:
- X 440mm x1
- Y 450mm x1
- Frame 450mm x2 + 360mm x2

Z lead screw 350mm x2 , TR8x8, or better TR8x2
Rail X HiWin MGN12 , 360mm x1
Rail Y HiWin MGN12 , 420mm x1
Rail Z HiWin MGN12 , 400mm x2
Micro switch x 3
Motor Nema17-40mm, 400 step/turn, x2 (for X and Y)
Motor Nema17-40mm, 200 step/turn (for Z), preferably with leadscrew integrated
Extruder x2 (pick the one you want, like bulldog)
hex screw M