[Steve Mould] came across an interesting little phenomenon of blue flames zipping around a circular track. This led to diving down a bit of a rabbit hole about excitable mediums, ultimately leading him to optimize the shapes and come up with some pretty wild variations which he shows off in a video (also embedded below.)
This is a companion discussion topic for the original entry at https://hackaday.com/2024/04/28/corral-some-zippy-blue-flames-into-3d-printed-troughs/