Uploaded January 2024 | Updated September 2026, 2 weeks ago

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A simple DIY cat whisker detector upgrade for any of my cat whisker detectors. It produces a better sliding action while maintaining good electrical connection over a much longer time, no steel wool needed!

MATERIALS
- Stainless or brass ball (I used 3/4" or 19mm)
- Stainless or brass rod (I used 2 mm 0.79")
- Wood ball (I used 3/4" or 19mm) or other insulator
- 1 spring per video.

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3D Printed Cat Whisker Detectors:
Crystal Radio Cat Whisker Ver 2.0 **FINAL**! youtu.be/ANuU8gsALzI
Crystal Radio Cat Whisker Detector Ver 1.0 youtu.be/kXv7kUcAICk

This is a cat whisker detector that does not require a 3D printer:
Crystal Radio Cat Whisker--Wood, Brass, Stainless youtu.be/PQ0clWe8NGU