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please help the wheel inside seems to be just going gently over the cards, and not moving them please help :-)
Knex Automatic Card Shuffler
Altay K'nex Tank
Big Mechanical K'nex Car
Knex Gun Collaboration Project
im really confused at no point does it tell you about how to make the gun fire please help as this gun looks really good.
wow what a gun just made it very powerful good all round