Retrograde- Knex Ball Machine Instructions (Not My Design)

This is not my own design, this is MarsCrystalMans ingenious design and I made an instructable for him on this. This instructable is quite long so it may take a while to build. This instructable is not intended to be high-quality but good enough to be understood.

video at https://www.instructables.com/id/Retrograde-A-Knex-Ball-Machine/

Step 1: Piece Count

RODS:

Grey: 58
Red: 175
Yellow: 173
Blue: 403
White: 363
Green: 340

CONNECTORS:

White: 78
Blue 3D: 134
Purple 3D: 255
Yellow: 255
Gold-track connector: 17
Green: 209
Orange: 125
Red: 184
Light-grey: 67
Dark-grey: 244

SPECIAL:

Black Y-clip: 63
Tan-clip: 28
Blue-clip:10
Gold-track clip: 14
Ball-socket joint: 2
Silver spacer: 79
Blue spacer: 132
Purple flexi-rod: 16
Orange flexi-rod: 7
Golden(red) rod: 8
Red gear: 1
Blue gear: 5
Large yellow gear: 1
Tan(red) rod: 7
Small triangle panel: 11
Triangle panel(3 holes): 3
Small square panel(1 hole): 1
Square panel(3 holes): 3
Small tire with tread: 11
Medium tire with tread: 5
Large tire tread(no tire): 2
small snap-on tire: 2
Medium snap-on tire: 1
Motor(newer green ones): 1

Step 2: The Base

Step 3: Support Structures and Return Tracks

A Big Step.

Step 4: Path Selectors and Drop-Path Selector

Another big step. This also fulfills a request for the Drop-Path separator for a member.

Step 5: Stepper- Lift System

This fulfills another request for a member. This is an instructable in an instructable!

Step 6: Path 1

I found this element to be very cool.

Step 7: Path 2 ( Wormhole Element)

This path has the Wormhole Element someone wanted instructions on. Includes part of another path.

Step 8: Path 3

The path that traps the ball behind the wormhole.

Step 9: Path 4

This step may seem complicated but just copy what you see. I didn't feel like taking the whole thing apart. I used a tv jack cable for the tubing. I modified the element with spacers. The element didn't work for me for some reason, maybe because the cable was too thick so try roller coaster tubing.