Here’s a fun one! Inspired by a conversation with Chris Daniels of Public Math.
He said roll paper around a cylinder and cut on an angle to get an ellipse and produce a sine wave. So we did! And you can too. Then you can make a roller from ellipses, reflect your sine curve and roll the elliptical roller along the sine curve track.
See the videos here. Video 1 Unroll Sine curve. Video 2 Reflect Sine curve and roll ellipse
If your program is not vegetable friendly and you’d like something more durable, you can make a wooden track and ellipse using our files.
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- Cucumber, paper towel
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- Roll up cucumber in towel and cut on angle
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- Cut two ellipses with notches to assemble roller
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- Unroll sine curves, arrange as a reflection and roll your roller!
There’s a slow motion video of the wooden roller here and laser files to make this here.
