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Coin "ping" tool
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A simple tool to detect fake precious metal coins by flipping them between prongs and listening to the sound quality.
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Model information
- Source
- Printables
- Category
- Tools
- License
- Creative Commons — Attribution — Noncommercial — Share Alike
Printed out as shown with 20% gyroid infill. Sanded down afterwards. Prongs are made from small brass threads as shown with glued-on rubber tip (the smaller the rubber tip area, the better the sound). Fake coins emit a shorter “pong” like sound, real ones a long lasting “piiing” - Link:
Recommended to use some ping tester app (e.g. https://apps.apple.com/in/app/precious-coin-tester/id1474466880)