In Fusion 360, many users encounter situations where components, sketches, or bodies have been accidentally fixed in place, preventing them from being moved or modified. Fixing an object locks its position in the workspace, which can be helpful for keeping reference geometry stable, but it can also become an obstacle when the design changes. The phrase Fusion 360 unfix all refers to the process of removing these fixed constraints so that everything can be adjusted again. Whether working on assemblies, parametric parts, or multi-body models, understanding how to unfix geometry is an important part of maintaining flexibility in a design workflow.
Understanding the Fix and Unfix Tools
Fusion 360 offers a set of tools that allow users to control the movement and stability of parts. Fixing a sketch point or body prevents it from shifting accidentally. This is often used early in the design process when establishing reference origins. However, as the model evolves, a fixed element may cause errors, warnings, or limitations when attempting to reposition elements or apply constraints.
The Unfix command removes the constraint and restores full freedom of movement. This makes the element responsive again to constraints, dimensions, and positional adjustments.
When Fixing Occurs
Fixing may be applied intentionally or unintentionally through
- Selecting the Fix/Unfix option after right-clicking a component or sketch element
- Dragging a component into position in an assembly environment
- Applying grounding in the browser to prevent motion
- Using imported models that contain locked references
Understanding that fixing can come from multiple sources helps clarify why certain geometry may not move as expected.
How to Unfix an Element
To unfix a single item in Fusion 360, the general workflow is simple
- Right-click the fixed sketch point, sketch line, body, or component
- SelectFix/Unfixfrom the context menu
The moment the Fix constraint is removed, you can reposition the element or allow constraints and joints to define its motion. However, this becomes more complex when several elements need to be unfixed at once.
The Challenge of Unfix All
Fusion 360 does not currently include a dedicated one-click Unfix All button. Instead, removing multiple fixed constraints requires identifying and clearing them individually or through selection tools. This can be tedious in a large assembly or complex sketch, especially when many small elements were fixed earlier in the modeling process.
However, there are effective techniques to achieve a bulk unfix result.
Using the Browser to Locate Fixed Components
In the model tree, grounded or fixed components may display a small symbol beside them. Users can
- Expand the component list
- Locate items marked with fixed or grounded icons
- Right-click and selectUnfixorUnground
This approach works well in assemblies where the number of fixed components is relatively small.
Unfixing Sketch Elements in Bulk
If the issue is within a sketch, fixed points or segments will display with green coloring or small lock icons. To unfix multiple sketch elements
- Open the sketch
- HoldCtrl(Windows) orCmd(Mac) to select multiple items
- Right-click and chooseFix/Unfix
You can also drag a selection window around the whole sketch, though caution is required to avoid accidentally selecting external references.
Working with Constraints After Unfixing
Once constraints are removed, some sketch geometry may become under-defined and may move unexpectedly. The design may need new dimensions or relationships to maintain shape. Fusion 360’s constraint system helps restore stability
- Use Coincident constraints to anchor points
- Use Horizontal/Vertical to control alignment
- Use Dimensions to lock distances and angles
Proper constraint application helps avoid distortions when geometry is moved.
Grounding vs Fixing
It is important to distinguish between the Fix/Unfix command in sketches and the Ground/Unground function in assemblies. Grounding locks a component in place relative to the workspace or assembly origin and is often used to prevent an assembly from floating freely when joints are applied.
To Unground a component
- Right-click the component in the Browser
- SelectGroundto toggle it off
Ungrounding restores freedom of motion so that joints, constraints, or manual movement can reposition the part.
Tips for Avoiding Over-Fixed Designs
A common issue in early modeling is overusing fixing instead of proper constraints. To maintain flexibility
- Use dimensions and geometric constraints instead of fixing sketch elements
- Keep only one stable reference point fixed, such as the origin
- Use joints rather than ground for positioning components in assemblies
- Revisit constraints as the design evolves to avoid over-locking motion
A well-constrained model behaves predictably without needing to lock elements in place.
When Fixing Is Useful
Fixing is not inherently a problem it is a tool that serves specific purposes
- Preventing geometry from shifting during early layout
- Establishing stable reference boundaries
- Holding anchor points that help guide sweeping or lofting operations
- Reducing accidental movement in large designs
Problems arise only when fixes are applied too broadly or forgotten later in the modeling process.
Understanding how to manage fixed geometry is an important skill for working efficiently in Fusion 360. While there is no single Fusion 360 unfix all command, users can unfix elements by selecting and toggling the Fix/Unfix control, ungrounding components, and using bulk selection methods in sketches. By learning the differences between fixing and constraining, users can maintain flexible and stable designs that adjust smoothly as projects develop.
With practice, managing constraints becomes second nature, helping create cleaner, more adaptable models that can be edited and refined without unnecessary difficulty. Fusion 360 offers the tools needed to maintain full control of geometry it just requires understanding when to fix, when to unfix, and how to apply strong constraint principles instead.