How to Add Dimension in Fusion 360?

Understanding Dimensions in Fusion 360

Fusion 360 is a powerful 3D modeling tool that allows users to create precise parts and assemblies. One of the fundamental aspects of modeling is the ability to add dimensions, which provide critical information about the size and location of sketch entities. This guide lays out the step-by-step process to effectively add dimensions in both 2D and 3D sketches within Fusion 360.

Adding Dimensions in a 2D Sketch

1. Open Your Sketch: Begin by creating a new sketch or editing an existing one. Navigate to the “Sketch” tab in the toolbar and select “Create Sketch.” Choose the appropriate plane or face on which to sketch.
2. Select the Dimension Tool: In the “Sketch” tab, locate the “Constrain” panel. Click on the “Dimension” icon, which is usually represented by a dimensioning symbol.
3. Dimension Geometric Elements: With the Dimension tool activated, click on the sketch geometry that you want to dimension. You can dimension lines, circles, or any other sketch entities. After clicking, move the cursor to where you wish to place the dimension and click again to confirm its location.
4. Set the Dimension Value: A text box will appear prompting you to enter the dimension value. Input the desired measurement and hit “Enter.” The dimension will then display on your sketch, reflecting the size of the selected geometry.
5. Repeat as Necessary: Continue this process for other sketch elements that require dimensioning, ensuring you convey all necessary measurements in your design.

Adding Dimensions in a 3D Sketch

1. Initiate a 3D Sketch: Open a 3D sketch by clicking on the “Create Sketch” option and selecting a suitable plane or face for your design.
2. Access the Dimension Tool: Like in a 2D sketch, navigate to the “Sketch” tab and find the “Constrain” panel. Click on the “Dimension” icon to activate it.
3. Click to Select Geometry: Select the geometric entities in your 3D sketch that you wish to dimension. This could include points, lines, or curves within the 3D space.
4. Position the Dimension: After selecting the desired geometry, position your cursor to place the dimension and left-click to finalize its placement.
5. Input Dimension Values: Enter the numeric value for the dimension into the text box that appears and press “Enter” to save the changes. This provides the user with an immediate visualization of the dimensions applied to the 3D features.
6. Continue as Needed: Add further dimensions as required for other features in your 3D sketch to maintain accuracy in your design specifications.

How to Modify and Manage Dimensions

Edit existing dimensions easily by double-clicking on the dimension value; this will allow you to modify it. You can also reposition dimensions by clicking and dragging them, ensuring they are clear and readable in your sketch.

Displaying and Hiding Dimensions

If you find that your sketch is cluttered with dimensions while working, consider hiding them temporarily by exiting the sketch mode and adjusting the visibility in the browser tree. You can show or hide dimensions by right-clicking on the sketch in the browser and selecting the appropriate option.

FAQs

1. Can I modify dimensions after they’ve been added?

Yes, you can modify dimensions by double-clicking on the dimension value in your sketch. This allows you to change the value or reposition the dimension for better clarity.

2. How can I remove an unwanted dimension?

Select the dimension you wish to delete and press the “Delete” key on your keyboard. This action will remove the dimension from your sketch while maintaining the geometry.

3. Is there a way to display measurements for existing geometry?

Yes, if you right-click on the sketch and select “Show Dimensions,” any dimensions that were previously added will be displayed, allowing you to review the measurements of the sketch elements.