Here are the instructions on how to make my knex ball machine.

Video.

Step 1: Piece List

Piece List

Rods
Red - 3
Yellow - 42
Blue - 56
White - 32
Green - 58

Connectors
White - 2
Blue - 45
Yellow - 27
Purple - 44
Green - 2
Red - 10
Orange - 11
Light Gray - 2
Dark Gray - 22

Other
Gray Spacers - 7
Blue Spacers - 12
Medium Gears - 7
Small Gears - 1
Y-Clips - 4
End Caps - 14
Motors - 1
Chain Links - 27

Step 2: Base Part 1 (Path)

1-3:Make
4-6:Make
7:Connect

Step 3: Base Part 2 (Motor and Gears)

1-5:Make

Step 4: Middle and Top

1:Make
2:Make
3:Make
4:Connect
5:Connect

Step 5: Chain and Chain Support

1:Make
2:You need 27 chain links. Put one of these on 10th and 23rd chain links.
3:Whole chain.

Step 6: Path and Path Supports

1:Make
2:Make
3-5:Make
6-7:Connect
8:Connect

Step 7: Assembly

1:Base Part 2 + Base Part 1
2:Middle and Top + Base Part 1 and 2
3:Add Chain Support
4:Add Chain
5-8:Path and Path Supports + Base Parts 1 and 2 and Middle and Top
9:Add Balls
10:Turn switch on motor to the left.
You're Done!