A long time after having lots of fun fun blowing stuff up with the high-energy capacitors from the Surge Generator, I came across a few more caps, which with the originals, makes up a total of 220uF at 5KV (some of the newer caps had a lower voltage rating than the original 6KV ones). I decided to build them into a box with a charging supply to make the setup slightly safer and easier to use. Link.