Knex Ball Machine First. (of Many I Hope) :) By Fr-Pa-Co in LivingLEGO & K'NEX66513Save PDFFavoriteIntroduction: Knex Ball Machine First. (of Many I Hope) :)By Fr-Pa-CoFollow More by the author: About: My 100th commenters 1. I_am_Canadian 100.k-n-e-x More About Fr-Pa-Co »The video of my new ball machine