Bendy Spiral | a K'nex Ball Machine Element

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Introduction: Bendy Spiral | a K'nex Ball Machine Element

About: 3D printing enthusiast and aspiring engineer. Ex K'nex addict

Difficulty: Very Hard

Hello! Here is the final element from my k'nex ball machine 3XODUS. It is a spiral but doesn't use any tubing. This was a big challenge as I had to get the shape and steepness correct or the ball wouldn't roll down! I have made many improvements to it since it was on my ball machine. It is very well supported now. Remember that this is a very heavy element so make sure it is extremely well supported in your ball machine or it will fall off! Want to build it? Let's go!

Featured?! Thank you so much Instructables!

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Step 1: Piece Count

Rods: 173

Green - 40

Blue -31

Yellow - 23

Red Bendy (Yellow size) - 35

Red - 21

Grey - 10

Purple Bendy (Grey size) - 13

Connectors: 153

1 Slot - 6

2 Slot (Orange) - 36

3 Slot - 15

5 Slot - 61

8 Slot - 3

7 Slot 3D - 11

4 Slot 3D - 21

Miscellaneous: 3

Metallic Blue Clip - 1

Y Clip - 2

Total: 329

Step 2: Frame

  1. Build this
  2. Build this
  3. Build this
  4. Build this
  5. Assemble
  6. Assemble
  7. Assemble

Step 3: Railing

This is the hardest part, make sure you follow the steps VERY carefully

  1. Build this
  2. Build this
  3. Assemble
  4. Assemble
  5. Assemble
  6. Alternate view
  7. Alternate view
  8. Alternate view

Step 4: Guides and Extras

  1. Build these
  2. Assemble
  3. Alternate view
  4. Alternate view
  5. Build these
  6. Assemble
  7. Alternate view

Step 5: Path

  1. Build these
  2. Assemble

Step 6: Extra

Anywhere that the ball gets stuck, put this under the track that is having that problem. Over time, the element should sort itself out. Some places you may have to modify yourself.

Step 7: Finished!

You made it, well done! Please tell me what you think of it down in the comments! Subscribe for more builds like this in your 'you' page. Favorite and share but more importantly, have a great day!

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    18 Discussions

    0
    dvader1248
    dvader1248

    2 years ago

    I am mostly going to use this in my ball machine

    this element is really cool

    thanks bro

    0
    That_Jamie_S_Guy
    That_Jamie_S_Guy

    Reply 2 years ago

    You're welcome glad it can be of use!

    0
    dvader1248
    dvader1248

    2 years ago

    hey everyone can someone please tell the diameter of one of those knex balls

    in inches please

    thanks

    thanks

    0
    hrishi4040
    hrishi4040

    3 years ago

    gr8 thinking !

    0
    FanPlastic
    FanPlastic

    3 years ago

    Good ible and Good job getting featured, but i'm kinda clueless... what does getting featured even mean?

    0
    That_Jamie_S_Guy
    That_Jamie_S_Guy

    Reply 3 years ago

    Featured means 3month pro membership for free and also it gets shown on the front page so you get tons more views. You also get an achievement. :)

    0
    FanPlastic
    FanPlastic

    Reply 3 years ago

    Sweet!

    0
    That_Jamie_S_Guy
    That_Jamie_S_Guy

    Reply 3 years ago

    I just realised the name of my new gun (linking lightning carbine) has the same initials as the end of your name!

    0
    GuppehsWorld
    GuppehsWorld

    3 years ago

    this is neat!! Ima build it later today!!

    0
    That_Jamie_S_Guy
    That_Jamie_S_Guy

    Reply 3 years ago

    thank you! Please post a picture!

    0
    GuppehsWorld
    GuppehsWorld

    Reply 3 years ago

    I might not have enough small orange bendy pieces ;-;

    0
    That_Jamie_S_Guy
    That_Jamie_S_Guy

    Reply 3 years ago

    Well you could probably scale it down a bit:)

    0
    Lexi Knex
    Lexi Knex

    3 years ago

    THIS INSTRUCTABLE HAS BEEN FEATURED !!!!!!!

    congrats (=