How to Quickly Create a Gear with Hole in Tinkercad

How to Quickly Create a Gear with Hole in Tinkercad

Creating parts and components in CAD software like Tinkercad can seem daunting for beginners. However, with some easy tricks, you can quickly design even complex shapes like a gear with hole in a few simple steps. In this comprehensive guide, let’s walk through the process of making a custom gear with centralized hole in Tinkercad in minutes.


Tinkercad is a free, easy-to-use web-based CAD modeling platform perfect for beginners and hobbyists. With Tinkercad, anyone can bring their ideas to life by creating 3D models for 3D printing or other applications.

In this blog post, we will show you how to create a gear with hole in Tinkercad from scratch in under 10 minutes. With a little bit of practice, you will be able to adjust and customize this model by changing parameters like number of teeth, hole size, gear thickness and more.

To follow along, you should create a free Tinkercad account. The tools we will cover are Workplane, Basic Shapes, Group and Ungroup, Align, and Measure. Let’s get started!

Creating the Gear Base

First, navigate to the Basic Shapes menu and select the Gear shape. This inserts a default gear with 18 teeth on the workplane.

Next, with the gear selected, tweak the parameters on the right inspector panel. Set teeth number to 15, hole diameter to 20 mm. Check “Hole” to add a hole in the center. Set thickness to 10 mm.

This now gives us a good base gear with 15 teeth, 20 mm central hole and 10 mm thickness. We will further customize it next. The hole is useful to attach it to a shaft or axle.

Customizing Gear Parameters

Now to customize the gear design. Let’s:

  • Reduce number of teeth to 10
  • Reduce hole diameter to 10 mm
  • Increase thickness to 15 mm

To do this, adjust the respective parameters on the right panel again. Reducing teeth and hole size makes the gear more compact. Increasing thickness adds durability and strength.

We now have a sturdy 10 mm thick gear with 10 teeth and 10 mm centralized hole. This can be exported to 3D print directly if needed.

A screenshot of a 3D modeling application interface with a customized gear design on the grid and parameter adjustment options on the right side.

Adding Centralized Hole

Additionally, we can also create the hole as separate cylinder shape for more flexibility.

Navigate to Basic Shapes and insert a 10 mm diameter cylinder. Align it centrally on top of the gear using the Align tool. Select both objects and Group them.

Ungroup and delete the existing gear hole. The hollow cylinder will now act as the customized hole. Expand it by dragging from inside or resize by changing diameter.

This method helps alter the hole independently without affecting the gear. The position stays locked after grouping.

A screenshot of a 3D modeling software with a blue gear and a transparent cylinder in the center, suggesting a hole being added to the gear, with shape selection and properties panel visible on the right.

Final Tweaks Before Export

We now have a parametric gear with easy-to-adjust centralized hole suitable for all types of projects.

Some last things you can tweak are:

  • Try different hole shapes like hex or octagon
  • Add more gears of various sizes
  • Change material and adjust settings for 3D printing
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Make sure to name your design before exporting the .STL file for the next step.

So in a few simple steps, we created a customized gear with hole model ready for fabrication. Tinkercad’s user-friendly tools make even complex parts very easy to model digitally.


I hope this guide gives you a good overview of designing a parametric gear component with centralized shaft hole in Tinkercad. Please leave any feedback or queries you have in the comments.

With a little more practice, you can try making interlocking gears, timing pulleys, chain sprockets and other cool mechanisms components. Tinkercad is the perfect platform to bring your imagination into reality by crafting digital models for 3D printing.

So start tinkering now and let me know what unique designs you come up with!

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