It’s evidently not the answer to all variable capacitor problems, but it’s a neat piece of lateral thinking and it will make a simple working capacitor from readily available parts.
Watching one at work, with its plates evenly and ... Cook] came up with this home-brew variable tuning capacitor. The frame is built mainly from 3D-printed parts, which supports a shaft made ...
A battery’s best friend is a capacitor ... the change—one he unearthed while working on something completely different—by ...