Very nice work.
I to have long wanted to make such a thing. Which brings me to this: Has any of you theorized about the technology of a steampunk lightsaber?
To me it is important to explore the workings of a contraption, before I start with the fabrication.
Thank you

Well the working of a lightsaber is actually pretty simple. And I think that if you mix in steampunk into that it won't differ that much from the orriginal concept.
The inside of a lightsaber consists of a few simple things.
1 Power Source : In most of the times this is only needed to spark a reaction inside the force cristal wich actually gives the lightsaber it's pure energy. This thing is located at the bottom of the saber.
2 The force Cristal it's self: This is the part where earth scientist brake their heads on. And probably a good thing too

the force cristal is a small jemstone (not larger than a marble) wich has grown over billions of years inside caves wich are strong in the force. (Think about the fight between Luke Skywalker and What he thinks to be Darth Vader on Dagobah) This little gizmo has stored the force energy within it's self and has ultimately become a conduit for the force. And this also gives the lightsaber it's color.
3 Focus cristal: this to is a force crystal which is far more common (think about going to any random jewel shop) which is pollishect in such a way that the beam of the lightsaber is emited in any direction or length.
4 The Emitter: this is the final lens in the top of the lightsaber. This one can either be a force cristal or just plane glass. If it is a forcecristal it can give different properties to the saber when turned onn or off.
So the way a lightsaber works is simple, powersource sparks the main cristal.
The main cristal emits energy.
The focus cristal channels it into a beam
The Emitter let's through the beam of energy and alters it the way the jedy wants.