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Instructables

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  How to Make a Knex Roller Coaster

  7 6.7K
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  An Idea for a Knex Ball Machine Lift

  4 842
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  Loop. a Knex Roller Coaster

  3 2.1K
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  K'nex Roller Coaster

  1 1.2K
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  Project Tiny:the Smallest Knex Ball Machine

  1 1.3K