Weekly Challenge Roundup: October 31, 2011

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Weekly Challenges are hosted by the Editors at Instructables.com and focus on a specific theme or idea. These quick-fire challenges have some great prizes, and the more entries there are the better the prizes are!

This week's Challenges are:
Deadline: November 6th, 2011(11:59pm PDT)
Deadline: November 6, 2011(11:59pm PDT)
Chemical Reactions
Deadline: November 6, 2011(11:59pm PDT)

Weekly Challenge Archive

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