According to the model visible in world of warcraft obtained during the pre-Legion invasions:
http://www.wowhead.com/item=141614/eredar-splitter
630 mm long, if printed on the scale of the parts,
The largest piece requires 27 cm in Y
11 files in STL format
Printer:
Hephestos 2
Rafts:
No
Supports:
No
Resolution:
0.2-0.3
Infill:
as you want