Poorly documented? Don’t mind if I do! Today I have for you something I’ve always wanted to build, and finally did: A functional big damn knife switch. The sort that is generally referred to with the phrase “Throw The Switch!” just before something high voltage and squishy occurs. I only took 5 pictures of this one, so I just labeled them. This switch, as so many past things, was a prop for the Science Musical.

(more…)