• A sound board - of coures there are lots of other choices, but then you'll be better off with a different guide, like this one.
• A chassis, or some way to hold the parts on the inside.
• male aviation connector
• a thin, 28mm speaker
• an 3.7v li-ion battery most batteries will work, but make sure it can provide enough amps for whatever you want to power.
• A graflex 2.0 (or some other hilt, but then you'll need to design the chassis yourself.)
• thin colored wire

Putting it together
First, make sure you watch this excellent video tutorial to familiarize yourself with the Graflex 2.0. We'll be using a different chassis and electronics, but it's important to know how to work the Graflex. If you have some other hilt, such as a real vintage graflex, contratulations, but you're going to have to design your own chassis.

Obtaining a chassis
If you have access to a decent 3d printer, go here, download part 1, 2 and the battery holder and print them out. If you do not, you can order them printed from the same link, or if you like to have them printed in stronger materials, you can get the parts from Shapeways instead. I printed mine of a Form 2 printer, if you have one available, I recommend using the "tough" resin.

The touch button
For my light saber, I decided to use the circuit board clamp card, and wire it up as a touch button. Note that "touch" is a bit of a misnomer, as you're not actually supposed to touch the copper parts directly, as static electricity can potentially fry the teensy that way. The solution is simply, just wrap the clamp card in some packing tape (after you solder a wire to the back of it). Of course, if you prefer you can use switches in the clamp, as they do in the video tutorial above.

Stuffing
When it comes time to stuff the electonics into the chassis, it should end up looking something like this:

• The vent-like slots near the speaker are actually wire channels to let the wires go around the speaker to the blade connector.
• The electronics is not actually anchored, once the battery is in place, the cables does the job.
• The sd card and usb slot is where the pommel will go.
• See the little notch at the base of the neck? Once you put the top piece on, you can use a rubber band to hold the chasis together.
• The electronics stick out a little at the bottom, this is ok as there is a little space in the pommel itself for them.

You'll need to file or cut down the nobs that stick out from the grips on the inside of the graflex to fit this chassis. I used a dremel with a sand paper bit, which was easy, but took a long time since I didn't want the screws to get so hot that they melted the grip plastic.

Once you put the top piece on and insert it into the blade holder, it looks something like this:

Problems? Questions? Suggestions? Check out The Crucible.