About: Hi! I,m Knex4Life23, Also known as James and i love anything that has to do with building!( mostley Knex) I have built a backyard roller coaster, and a zipline. I believe in the lord Jesus Christ. I was rece...
More About Knex4Life23 »
Intro: K'nex Coaster "Formula 1"
My knex launched coaster.(Comment if you want instructions)