3D Print Dispensing Gumball Machine

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A popular attraction for the youth at DHF is our 3D Print Gumball Machine. They go crazy over it everyday asking for tokens. Even some parents enjoy it, too!

Instead of dispensing gumballs, it dispenses 3D printed objects created by our staff, youth, and folks from Thingiverse. You can join in on the fun by creating your own!

We got all of our components for this project from the Gumball Machine Factory. Those components include:

  • Toy Capsule Vending Machine 20″
  • 500 tokens
  • 2” Toy capsules

You can choose the coin mechanism for the machine. In my opinion, the token coin mechanism seems like the best option. At DHF, we usually give out tokens for free, but if we wanted to sell them we could. However, If you go with the quarter mechanism, you won’t have that option.

Once you have ordered your parts, you can start 3D Printing!

This can be a fun project to get your youth involved in!. They can contribute by designing prints in Tinkercad or 123D Design, as long as their prints are no larger than 40mm x 40mm. If you choose to put items from Thingiverse in the Gumball Machine, always give attribution (see below for details on how to do this)!

Don’t shy away from files because they are too small or too big, you can always scale the prints to fit your capsules. I’m going to show a few ways to do that below.

I want to print this file, Santa’s Reindeer, for the Gumball Machine.

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I’m now going to download the file and scale it (to what size) in order to fit the capsule.

There are multiple ways to scale your design, but I’m going to show you two ways that might be familiar with you using Tinkercad and MatterControl.

Scaling in Tinkercad

In Tinkercad, create a new design and import your downloaded file.

You want to click “Helpers” in the sidebar menu and drag the “Ruler” onto the workplane.

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In this case, the file is too small to be printed.

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Now you’re going to change both the X and Y axis to 40mm.

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Using this method doesn’t always scale correctly. Here is another way to do it in Tinkercad.

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To scale hold the shift key, click any of the four corner points and drag inwards. Scale down until the largest side is 40mm or below.

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Now download the .stl file and you’re ready to print.

Scaling in MatterControl

In MatterControl, import your file by clicking the “Add” icon and select the file.

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Hover your mouse over the file and then click “View”.

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Next, click “Edit” and then “Scale”.

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You want to make sure that the Lock Ratio is unlocked. And then change both the X and Y axis to 40mm.

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Click “Save” and you’re ready to print.

About Attribution

If you’re going to sell your capsules, be sure you are the designs you are using from Thingiverse have a Creative Commons License that allows you to sell prints. If you’re not going to sell prints you can include those that are tagged Non-Commercial.

To find the license information, go back to the file on Thingiverse and scroll down the page and look for the Creative Commons.

Commercial
Commercial
Non-Commercial
Non-Commercial

Now you want to give attribution to the owner of the design. Under “Give a Shout Out” click “Print Thing Tag”.

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Then, print the Attribution Tag.

Place the tag and the print inside a capsule, close it up and now you have your first gumball print!

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