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Homemade spinning tops—5 easy, fun ways to make your own tops - Scovie Precision Turning

Physics - One-Way Spinning Top

A Guide to Spinning Tops Across the Globe - HobbyLark

Spinning Tops Exploratorium

DIY Spinning Tops

STEM Challenge- Best Coin for a Paper Plate Spinning Top - JDaniel4s Mom

Design and Print a Spinning Top

Spinning Tops Shapeways 3D Printing Forums

Tinkering with Tops - Powered by IEEE

Spitzkegel Handmade Spinning Top, Extraordinary Design

CNC-machined Spinning Top Inspired by Zen - eVolo

Spinning Tops Exploratorium