Birthday Cake to Print out and Make!

With my brother’s birthday and #1daughter’s birthday both on the horizon my thoughts turn to birthday celebrations.
If you want to celebrate a birthday in your family what better way to set off the day than this delightful birthday cake that you can print out and make!

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Tooth and Slot Gear to Download and Make.

This project expands on the Tooth & Slot gear to make a usable Essential Mechanism. The pinion slot gear connected to the handle has nine slots, the gear has 27 teeth. The overall reduction is speed is 3:1.

Make the model as an exercise in pure engineering or as the starting point for your own paper animations.

More details here.

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