The largest K'nex machine ever made

And here I am having trouble making a Lego airplane with instructions

I didn't know K'Nex were still being made. Glad to see this.

It would be a tragedy if someone..,
no for real it would its 4 kids

I must find it and play with it.

**engineering intensifies**

kid nearby trips

Here:
www.youtube.com/watch?v=KJhoIfiHjVE

Your username makes this sketchy

How'd you do that that's awesome