Scaling models in Ultimaker Cura is a fundamental process that allows you to adjust the size of your 3D print to fit your needs, whether for precision or visual preference. The software provides multiple intuitive methods to achieve this, from exact numerical inputs to interactive adjustments.
Accessing the Scale Tool
To begin scaling your 3D model, you first need to select the dedicated Scale tool. Once a model is loaded into the 3D viewer, you can typically find this tool in the left-hand toolbar. Selecting it will reveal various scaling options and controls.
Methods for Scaling Your Model
Ultimaker Cura offers flexibility in how you resize your models, catering to different levels of precision and user preference.
1. Setting a Specific Size (in Millimeters)
For highly accurate sizing, you can directly input the desired dimensions in millimeters. This method is ideal when you need your print to match an exact real-world measurement.
- Select the Scale tool.
- Locate the input fields for dimensions (often X, Y, Z axes).
- Enter the precise size in millimeters for one or more axes. If Uniform Scaling is enabled, changing one dimension will automatically adjust the others proportionally.
2. Scaling by Percentage
If you need to make a relative adjustment to your model's size (e.g., half its current size, or double), scaling by percentage is an efficient way to do so.
- Select the Scale tool.
- Find the percentage input field.
- Enter the desired percentage (e.g., "50%" to reduce by half, "200%" to double). This will scale the model uniformly across all axes if Uniform Scaling is active.
3. Dragging Handlebars in the 3D Viewer
For a more visual and interactive approach, you can directly manipulate the model's scale within the 3D viewer.
- Select the Scale tool.
- Click and drag the handlebar (often represented as a colored arrow or cube) attached to the model. Dragging inward will shrink the model, while dragging outward will enlarge it. This method typically scales uniformly by default, but individual axis handles might be available depending on settings.
Understanding Scaling Options
Ultimaker Cura also includes helpful options that refine how the scaling process behaves:
| Option | Description |
|---|---|
| Uniform Scaling | When enabled, changing one dimension (X, Y, or Z) will automatically adjust the other dimensions proportionally, maintaining the model's original aspect ratio. Disabling it allows for non-uniform scaling, which can distort the model. |
| Snap Scaling | When enabled, scaling adjustments will "snap" to predetermined increments (e.g., 25%, 50%, 75%, 100%), making it easier to hit common size percentages without precise input. |
Resetting Model Scale
If you've made several scaling adjustments and wish to revert your model to its original imported size, Cura provides a convenient "Reset" function.
- Select the Scale tool.
- Look for a "Reset" or "Reset Scale" button/option. Clicking this will instantly return the model to its initial scale.
By utilizing these tools and options, you can precisely control the size of your 3D prints, ensuring they meet the exact specifications required for your projects.
