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Drawing Machine II

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Uploaded on Jan 25, 2012

A stepper motor driven drawing machine that creates complex guilloché patterns. Guilloché is the word used to describe intricate repetitive patterns often used in security printing and fine metal working. The machine uses three micro-step motors that are controlled by a program written in PureData. Careful control of the motor speed ratios and positioning of the pen arms results in complex patterns. Some of the best patterns are the result of setting the speeds very near but not quite on specific harmonic relationships. The pen traces a Lissajous curve and the paper rotates beneath the pen, thus tracing out the complex pattern.
The patterns take from 10 minutes to an hour to create.

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