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Step 4: Sanding/Filing

With your file or sand paper, round off the teeth on your sprocket. After that, your sprocket is done. This picture is a perfect example of what happens when you use plywood, it splinters a little.
dill holes, <br>only after that remove corners <br>
Excellent! I like your idea of using an octagon to make the 'teeth' ends have the right shape.
Very interesting, thanks for the idea.
Neat

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Bio: I am a college student from California, and I love robotics, science, programming, and engineering. I love instructables because I love to build things.
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