A green line in Fusion 360's sketch environment signifies that the geometry is either fixed or unfixed.
When sketch geometry, such as lines, arcs, or points, appears green, it indicates that it has been locked into place. This means its position, size, and orientation are constrained and cannot be accidentally moved or modified, providing stability to your design.
Why Use Fixed Geometry?
Fixing geometry in your sketches serves several important purposes:
- Stability: It prevents unintended changes to critical sketch elements, ensuring they remain exactly where you intend them to be.
- Foundation: Fixed geometry is often used to establish a stable base for other sketch entities that will be dimensioned or constrained relative to it.
- Partial Constraints: It's useful when you want some parts of your sketch to be fully defined while others remain flexible or unconstrained.
How to Fix/Unfix Geometry
In Fusion 360, you can fix or unfix sketch geometry using the Fix/Unfix constraint tool. This tool is typically found within the "Sketch Palette" or the "Constraints" section of the toolbar. Clicking this tool on selected geometry will toggle its fixed state, causing it to turn green when fixed. You can also right-click on sketch entities and select the "Fix/Unfix" option.
Understanding Fusion 360 Sketch Line Colors
Line colors in Fusion 360 sketches provide instant visual feedback on the constraint status of your geometry, helping you understand and manage your designs more effectively.
Here’s a breakdown of common sketch line colors and their meanings:
| Color | Condition |
|---|---|
| Green | Fixed/Unfixed geometry |
| Black (or white if dark environment) | Fully constrained geometry |
| Orange dashed | Construction line |
| Blue | Unconstrained geometry |
This color-coding system is crucial for understanding the degrees of freedom remaining in your sketch, troubleshooting under-constrained or over-constrained conditions, and ensuring your designs are robust and precise.
