I'm thinking of playing Infinite Sky, a Twilight Crafter who knows how to make artifacts (as well as orichalcum) but can't manage to create Magitech yet. Along with her Wings of the Raptor, one of the items from a previous incarnation is her Essence Buster, a device which sheathes over her entire forearm when not in Elsewhere.
The original design for the weapon is an Essence Pulse Cannon from Inkmonkeys, just something for a Solar instead of an Alchemical. The big question would just be whether it's acceptable. If not, I have other ideas to throw around ^_^