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This classic climbing arc completes any mad scientist's dungeon. Don't touch the electrodes: they're at 12 kV!
Get a neon sign transformer rated for 9 - 12 kV and 30 mA. Make sure it's an old style, heavy coil transformer and not solid-state. The solid-state ...
Build a base from the something nonconductive and nonflammable. I chose wood, which doesn?t quite meet the nonflammable criteria. Drill two holes approximately 0.5 inches apart and shove ...
Mount two copper pipes on the dowels. Make the fit snug by putting the wire between the dowel and the pipe. Connect the transformer output to the stiff ...
Set the spacing at the top of the copper pipes. I used a laser cut piece of acrylic. Something like drywall could also work. Eventually, the spark hung ...
To make sure no one grabs the pipes, build a case around them. I cut pieces of acrylic on a table saw and attached them to the base ...
Power up and check the spacing. Make sure to unplug before you adjust any gaps! Use a long exposure to take pictures.
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