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most of the explaining is done in the pictures, but i'll explain it here also. this car was made as proof that the new knex train track can ...
Mega Mechanical Mountainby mmahaffey
Challenge: Coasterby NPTechman
SkyRush - A K'Nex Roller Coasterby KNEXnCoding
Knex Firestorm Freefall Coasterby knexboy586
How to make a knex roller coasterby hi1
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