Sources for Imperial Knight Energy Blade 28mm 

Mars Warlord Titan (https://www.thingiverse.com/thing:2947596)
Dominion Crusader chassis (28mm) MK3 (https://www.thingiverse.com/thing:2997180)
Dominion Crusader MK3 Weapons (28mm) (https://www.thingiverse.com/thing:3013677)
