Funny Toothbrush Holder

A 3D-printed toothbrush holder shaped like a pair of rubber boots — that’s guaranteed to bring a smile! In this project, you’ll design your own funny toothbrush holder with TinkerCAD. In the end, you’ll have a practical object you can use every day.

What you need

• A computer or laptop with internet access
• An account at tinkercad.com
• Access to a 3D printer
• Your toothbrush for measuring!

Before you start: taking measurements

To make sure the toothbrush actually fits, you need to know how thick it is:

• Regular toothbrush: the handle is about 10–12 mm wide
• Electric toothbrush: the handle is about 25–30 mm wide

It’s best to measure your toothbrush with a ruler. Add 2–3 mm to the measured diameter — that way the brush fits in comfortably.

Step 1: Build the basic shape

We’ll build the holder as a pair of boots (like in the picture):

1. Open TinkerCAD and create a new design
2. Drag a cylinder onto the workspace
3. Change the dimensions:
   • Diameter: 30 mm (for a regular toothbrush)
   • Height: 40 mm
4. That’s your first boot shaft!

Step 2: The hole for the toothbrush

1. Drag a second cylinder onto the workspace
2. Turn it into a hole (click “Hole” — it will be shown striped)
3. Dimensions:
   • Diameter: 15 mm (a bit larger than your toothbrush)
   • Height: 45 mm (taller than the boot, so the hole goes all the way through)
4. Position the hole cylinder centred at the top of the first cylinder
5. Select both and click “Group” (Ctrl+G)

Now you’ve got a boot with a hole — perfect for the toothbrush!

Step 3: Shape the boot’s foot

A boot needs a foot, of course:

1. Drag a hemisphere or a flat cylinder onto the workspace
2. Dimensions: about 30 mm wide, 35 mm long, 15 mm high
3. Position it at the front, bottom of the shaft — like a boot tip
4. You can also use a rounded box and scale it to fit

Step 4: Build the second boot

1. Select your finished boot
2. Press Ctrl+D (Duplicate)
3. Position the copy right next to it — placing them at a slight angle to each other looks especially fun (like in the photo)
4. Connect the two boots at the bottom with a small flat box as a base, so the holder stands stably

Step 5: Details and decoration

Make your holder unique:

• Sole: add a flat box under the boot (a different colour when printing)
• Texture: add thin lines to the boot shaft, like stitching
• A figure instead of boots: you can of course build a completely different shape — a monster, an animal, a robot… anything goes!
• Name: write your name on the front (with the text tool)

Step 6: Export and print

1. Select everything and group it (Ctrl+A, then Ctrl+G)
2. Click “Export” → STL
3. Open the file in a slicer (e.g. Cura or PrusaSlicer)
4. Print settings:
   • Layer height: 0.2 mm is enough
   • Infill: 15–20% (doesn’t need to be solid)
   • Supports: only needed if the foot overhangs a lot
5. Print and you’re done!

Done!

You’ve designed and printed your own toothbrush holder. From now on, your toothbrush stands in a genuine one-of-a-kind piece! And when friends ask where you got it, you can say: “I made it myself!”