How Do I Make a Mold in Sketchup?

Welcome to this tutorial on how to make a mold in Sketchup! Sketchup is a powerful 3D modeling software that allows you to create detailed and precise designs.

Whether you’re a designer, architect, or hobbyist, learning how to make a mold in Sketchup can be incredibly useful for various projects. So let’s dive in and explore the step-by-step process.

Step 1: Create a New Project

The first thing you need to do is open Sketchup and create a new project. Go to “File” > “New” to start with a blank canvas.

Step 2: Draw the Shape

Now that you have your project set up, it’s time to draw the shape of your mold. Use the drawing tools available in Sketchup, such as the line tool or the rectangle tool, to create the outline of your desired shape.


  • Use guides: Enable guides from the “View” menu and use them as references while drawing your shape.
  • Use snapping: Enable snapping from the “View” menu to ensure precise measurements and alignment.

Step 3: Add Depth

A mold needs depth to accommodate the object it will contain. To add depth, select your shape and use the push/pull tool. Click on one side of the shape and drag it inward or outward until you achieve the desired thickness for your mold.


  • Measurements matter: If you’re creating a mold for an existing object, make sure to measure its dimensions accurately before adding depth.

Step 4: Fine-tune the Shape

Now that you have your basic mold shape, it’s time to refine it and make any necessary adjustments. Use the editing tools in Sketchup to smooth out edges, round corners, or add any other desired details to your mold.


  • Use the eraser tool: The eraser tool can help remove unwanted lines or edges and create a cleaner-looking mold.
  • Experiment with different tools: Sketchup offers various tools like the arc tool or follow me tool that can help you create intricate details for your mold.

Step 5: Group the Mold

To keep your mold organized and easily manipulable, it’s a good idea to group all the components together. Select all the elements of your mold, right-click, and choose “Make Group” from the context menu.


  • Naming groups: It’s helpful to give your groups descriptive names so you can easily identify them later.

Step 6: Save and Export

Once you’re satisfied with your mold design, save your project by going to “File” > “Save.” You can also export it as a separate file format if needed, such as STL for 3D printing or DWG for CAD software compatibility.


  • Saving versions: It’s always a good practice to save multiple versions of your project at different stages so you can easily backtrack if needed.

Congratulations! You have successfully learned how to make a mold in Sketchup.

With this newfound knowledge, you can now create molds for various purposes, including prototyping, manufacturing, or even artistic endeavors. Enjoy exploring the possibilities with Sketchup!