Raise3D N2 And N2+ Dual Titan Etruder

PB 3D Design Dual Titan Extruder For Raise3d N2 and N2+
Link to the post on Raise3D community: http://forum.raise3d.com/viewtopic.php?f=4&t=1579

Technical data:
Weight with 2x Nema 17 34mm steeper motors 540g, Original extruder 879g.
Total Height: 118mm, Original extruder 135mm.
Total Width: 89mm, Original extruder 74mm.
Total Dept: 72mm, Original extruder 68mm.
No restriction of print volume, still original specification after upgrade.
Designed in Solid Works 2016.

Necessary change