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Step 2: Duplicate

Duplicate the inner circle on top of itself, such that you have two.

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what type machine u used?
Objet

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Bio: My name is Randy and I founded the Instructables Design Studio. I'm also the author of the books 'Simple Bots,' and '62 Projects to ... More »
More by randofo:Guitar Pedals Beginner Electronics Projects DIY Candles 
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