This is "Skyscraper", my biggest KNEX ball machine up to date. Since I never made an instructable for any of my ball machines before, I decided to make this so I won't miss out on this too much when this is gone.
HERE'S THE VIDEO:
Step 1: The Loading & Motor System /w the Returning Path
Step 2: The Top (Paths 1 & 2)
Step 3: Path 3 (with the Top)