Introduction: Coin Holder

Have you ever found it annoying when you put out coins at a vending machine or store? This time I made an item that makes it easy to get out the coins you need. Six types of coins used in the United States are supported.

Step 1: Make a Base Rectangular

Select "Box" from the "Basic Shapes" category of TinkerCad to create a rectangular shape that will be the base of the item. The size should be 92 mm x 59 mm x 20 mm.

Step 2: Make Outlets (1/2)

Select a hole version of "Cylinder" from the "Basic Shapes" and set the height to 20 mm, which is the same as the base. Then select "Box" from the same and set the width to 5 mm and the height to 20 mm like any other shape.

Combine the "Cylinder" and "Box" created in this step. At this time, one of the widest sides of the box have to pass through the center of the cylinder. When you're done so far, you should copy and paste the same thing to make 6 pieces, which will make the work in Step 3 easier.

Step 3: Make Outlets (2/2)

Adjust what you made in Step 2 to fit the diameter of each coin. The diameter of each coin is as follows:

  • Cent: 19.05 mm
  • Nickel: 21.21 mm
  • Dime: 17.91 mm
  • $ 1/4: 24.26 mm
  • $ 1/2: 30.61 mm
  • $ 1: 26.49 mm

You can change the overall size of the "Cyllinder-ish" object by selecting multiple shapes, but the width of the box will change accordingly. Make sure that the width is 5 mm.

Once you have set the diameter of each object, place them on both sides of the base. At this time, the holes for cents, dimes, and $ 1/2 have to be lined up on the left side, and the holes for nickel, $ 1/4, and $ 1 have to be lined up on the right side. Holes lined up on the same side should be lined up at intervals of about 5 mm. Also, arrange each hole so that the side of the box hole opposite to the side passing through the center of the cylinder is on the side of the base. It may be easier to understand if you refer to the first photo.

Once each hole is arranged as above, select all the objects and click the "Group" icon in the upper right. As shown in the second photo, only the part where the base had holes is cut out neatly.

Step 4: Make Grooves for Coins

Select a hole version of "Cylinder" and copy and paste it to make the same things of 6. Select a hole version of "Cylinder" and copy and paste it to make 6 of the same. Again, as we did in the previous step, you will change the diameter of the six cylinders to match that of each coin. However, this time it is necessary to change the height of the cylinders according to the thickness and capacity of each coin, not just the diameter. The height of each cylinder should be as follows:

  • Cent: 1.52 mm x 6 = 7.6 mm
  • Nickel: 1.95 mm x 4 = 7.8 mm
  • Dime: 1.35 mm x 6 = 8.1 mm
  • $ 1/4: 1.75 mm x 5 = 8.75 mm
  • $ 1/2: 2.15 mm x 4 = 8.6 mm
  • $ 1: 2.00 mm x 4 = 8.00 mm

Once the diameter and height of each cylinder have been set, place the cylinders at the "Outlet" of each. At this time, the cylinder are placed on the horizontal center line of the side surface of the base so that coins can be stocked firmly. The depth of grooves can be adjusted later, so you don't have to be very precise.

When you finished so far, select all objects and click the "Group" again.

Step 5: Make Guides

Select "Text", set the length to 2 mm, and enter "Cent". Copy and paste it and rewrite it as "x5" ("x5" represents the number of cents (capacity) that this coin holder can carry). You can use any font you like, but in the photo I use "Sans". If you can make something like the first photo, copy and paste it again to make six. Rewrite each with the name and capacity of the corresponding coin. The capacity of each coin is as follows:

  • Cent: 5
  • Nickel: 4
  • Dime: 6
  • $ 1/4: 5
  • $ 1/2: 4
  • $ 1: 4

When you finish rewriting everything, place each to the corresponding positions.

Step 6: Make Stoppers

Select "Roof" and create a flat triangular prism which size is 5 mm x 0.3 mm x 20 mm. Copy and paste it to make the same thing of 12. Attach two triangular prisms to each outlet (see the second photo). This prevents coins to fall off. After placing the triangular prisms, double-click the base to redisplay the holes that are creating the grooves. Then adjust the positions of the holes so that the coins (holes) are caught on the stopper.

Step 7: Work Completed!

Congratulations! At this point, your coin holder is complete. Enjoy adding your own decorations.

Tinkercad Student Design Contest

Participated in the
Tinkercad Student Design Contest