The right arm was used virtually unaltered from the original Exarch miniature.
This wrist-mounted shuriken catapult was cut away from a Scorpion's Claw (another Exarch weapon option).
The hand gripping this chainsword was carefully removed so that it could be moved to the left side of the miniature.
The pincers were removed from this Scorpion's Claw and replaced with a regular hand to grip the other chainsword.
This left hand was taken from the miniature of Eldrad Ulthran.
A length of brass rod passes through the crossguard, hand and hilt and attaches to the hanging decoration at the base.
The ammunition clip for the shuriken catapult was switched to the other side for this arm (to mirror the left).
Green Stuff was used to complete the grip.
The tiny scorpion modelled onto the base was removed for this conversion.