oneTesla

Update 11/7/2013: oneTesla has gained a life of its own and transcended to a new plane of existence! You can get a kit for one here.

oneTesla is a small DRSSTC with the entire driver (tank cap, voltage doubler, bridge, and logic) all on one PCB.
Tech specs:

• Inverter: half-bridge of FGH40N60SMDF IGBT's
• Tank capacitor: CDE940C30S68K-F, 0.068 uF@3KV
• Primary: 4.5 turns of 14 AWG on a 3.5" PVC former
• Secondary: 2.5x7", 36 AWG with a 2x7" topload. Resonant frequency is ~320KHz

200Apk, 270V bus, 40 uS ON@200BPS, 60VA out of the wall. Sparks are ~6" long

The interrupter lives in a separate box, and is coupled into the driver with coaxial cable. This works OK, though there are still some noise issues that cause the pulsewidth to fluctuate.

Schematic:

Get the Eagle board files [here] if you want to make one...its not quite perfectly reliable yet (in particular, it probably needs a optoisolated interrupter), but it does 6 or 7 inches at 100W fine.
If you're incredibly lazy, the DigiKey order for the most of the components (not the 40N60's), is [here]

Crappy phone video:

Random photos:

Board ready to etch

Primary current

Assembled board

Blindingly bright blue lights