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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 ...
Challenge: Coasterby NPTechman
Mega Mechanical Mountainby mmahaffey
SkyRush - A K'Nex Roller Coasterby KNEXnCoding
Knex Firestorm Freefall Coasterby knexboy586
How to make a knex roller coasterby hi1
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