In this video we'll learn how to make really simple gears in Tinkercad. And how to manipulate those gears to create different speeds and torque by resizing them.

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Links to Videos shown in my end card:
3D Printed R2D2:    • 3D Printed R2D2 - This is the Droid Y...  
Borderlands Loot Chest:    • 3D Printed Mini Borderlands Loot Chest  
2D Images to 3D Objects:    • How to Turn 2D Images into 3D Objects...  

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