Introduction: Knex Rotating Coin Display

     Ever since I saw the rotating coin display at the coin shop I use to shop at, I've wanted to build one, out of Knex of course :-)
The rotating coin display is aprox.15"x 10"x 10". It holds 12 coins and could probably hold more if you make it longer. The version I built is much smaller than the actual one. That's because I'm using most of my Knex for another project. See the rotating coin display in action in the video below. 

I'd appreciate it if you would vote for it in the Rods and Connectors Contest.


Step 1: Parts List

All the Knex parts are listed in they're classic colors.

  • grey connectors - 17
  • light grey connectors - 2
  • orange connectors - 11
  • red connectors - 18
  • green connectors - 5
  • yellow connectors - 30
  • white connectors - 4
  • purple locking connectors - 58
  • blue locking connectors - 10
  • green rods - 46
  • white rods - 52
  • blue rods - 47
  • yellow rods - 31
  • red rods - 12
  • grey rods - 2
  • large bendy rods - 4
            Clips and Spacers
  • Y-clips - 12
  • blue clips - 3
  • tan locking clips - 15
  • washers - 2
  • blue spacers - 5
  • silver spacers - 12
  • black hinge halves - 8
  • small gears - 2
  • medium gears - 2

Step 2: Side 1 Part 1

Step 3: Side 1 Part 2

Step 4: Side 2 Part 1

Step 5: Side 2 Part 2

Step 6: Connecting Side 1 and Side 2

Step 7: Coin Holders

Step 8: Connecting the Coin Holders

Step 9: Your Done!

Congrats! Your done! Now you can proudly display some of your finest coins.


kevinandbelma made it! (author)2017-07-11

Where do you get the motors?

random_builder made it! (author)2017-01-21

The rotating part is unnecessary, but the coin display is really good!

hawk45 made it! (author)2014-02-07

yet two other knex builders and homeschooled Christian! :) XD


hey! I am one to! ;)??

matthew9876 made it! (author)2015-07-08

I collect coins to my oldest is from 1845 and I just got a Morgan silver dollar

knexinventions 49 made it! (author)2014-03-20


Chikpeas Brother made it! (author)2013-12-31

Awesome! I'm a big coin collector too. :)

KneXtreme made it! (author)KneXtreme2013-12-31

Thanks. Finally, another person who collects coins :-) What's the oldest coin you have?

Chikpeas Brother made it! (author)Chikpeas Brother2013-12-31

A Roman coin from A.D. 70. I'm not sure what it's called. My favorite is a 2-cent coin from 1858. What about you?
By the way, I'm also a homeschooled Christian. :-)

KneXtreme made it! (author)KneXtreme2014-01-01

Whoa! I don't have anything close to that. My oldest coin is a 1862 indian head penny. My favorite coin I have is a Jamestown 400th Anniversary uncirculated silver doller. What's your most valuable coin? Nice to see another homeschooled Christian :-)

Chikpeas Brother made it! (author)Chikpeas Brother2014-01-01

My most valuable coin is probably one of my Morgan silver dollars. However, I have a medallion that's 3 1/2 oz. gold. That's obviously much more valuable. (The bank holds on to it) By the way, what belt are you?

KneXtreme made it! (author)KneXtreme2014-01-02

Red belt with tape. One rank away from black belt.

Chikpeas Brother made it! (author)Chikpeas Brother2014-01-02

Cool! I'm quite familiar with taekwondo. (I've lived in Korea for the past 3 years) Ironically, I was always too busy with school to actually learn. :(

Sorunome made it! (author)2013-09-13

nice one! :)

Verticees made it! (author)2013-08-12

This reminds me of that display Wall-e had in his home!

www139 made it! (author)www1392013-08-25

I was gonna say that! D-:

KneXtreme made it! (author)KneXtreme2013-08-13

Your right! I forgot about that :-)

sandroknexmaster made it! (author)2013-08-12

Nice! What is that other knex project that uses most of your pieces? :D

KneXtreme made it! (author)KneXtreme2013-08-12

Thanks. He, he, he :) It's a secret. Let's just say it's kind of like a cross between a roller coaster and a ball machine.

sandroknexmaster made it! (author)sandroknexmaster2013-08-12

Cool, sounds interesting! =D

Shadowman39 made it! (author)2013-08-11

That's a cool idea! How many coins have you collected in total?

KneXtreme made it! (author)KneXtreme2013-08-12

Thank you. Oh I have literally hundreds. I started collecting when I was 12 and about 2 years ago I inherited almost all my great-grandfather's coins nearly tripling my collection. I have everything from steel pennies to silver dollars. My current oldest coin is an 1862 Indian head penny.

nerfrocketeer made it! (author)2013-08-11

Cool! Unfortunately I don't collect coins... I only collect Nerf guns... :/ :P

KneXtreme made it! (author)KneXtreme2013-08-12

Thanks. My brother and I have quite an arsenal ourselves ;-)

MechanicalCreationMaster made it! (author)2013-08-11

Cool device! I guess this is what you put your coins on after you've used Shadowman's Coin Sorter... ;-D
(By the way, I have that motor too!)

KneXtreme made it! (author)KneXtreme2013-08-12

Thank you. Your right. Next time I sort coins I'll probably build his coin sorter and use it.

About This Instructable




Bio: Hi, I'm KneXtreme. I'm a Christian and I'm home schooled. I love to build with almost anything especially knex. I also do ... More »
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