Fusion 360 Parametric Design and History 2 — Questions and Answers
Question 1: What does the 'Edit Feature' option in the Fusion 360 timeline allow you to do?
- Rename a feature in the browser
- Reopen a feature's dialog to change its original input parameters (Correct answer)
- Copy a feature to another body
- Convert a feature to a different type
Correct answer: Reopen a feature's dialog to change its original input parameters
Edit Feature reopens the creation dialog for that feature — for example, letting you change the extrusion distance or direction after the fact.
Right-clicking any feature icon in the timeline and choosing Edit Feature (or double-clicking it) restores the model to the state just before that feature was created and reopens its creation dialog. You can change any parameter — sketch profile, distance, angle, operation type, etc. Clicking OK regenerates all subsequent features with the updated input.
Question 2: In Fusion 360, what is 'design intent' in the context of parametric sketching?
- The final rendering style chosen for presentation
- The planned behavior of a sketch when dimensions are changed — captured through appropriate constraints (Correct answer)
- The saved description field in file properties
- The target manufacturing process specified during design
Correct answer: The planned behavior of a sketch when dimensions are changed — captured through appropriate constraints
Design intent is the planned geometric behavior encoded through constraints so that when parameters change, the sketch updates in the desired way.
Design intent refers to the engineer's intent for how geometry should behave under parameter changes. For example, if a slot should always remain centered on a hole, a symmetric constraint captures that intent. Proper use of geometric constraints (parallel, tangent, concentric, midpoint) and dimensional constraints ensures the sketch updates predictably when driven by user parameters or table-driven configurations.
Question 3: What is the purpose of a 'construction line' in a Fusion 360 sketch?
- To add a reference axis for mate connectors
- To create geometry used for construction references only — it does not become part of the profile used for features (Correct answer)
- To mark edges that will be chamfered
- To define the outer boundary of the sketch
Correct answer: To create geometry used for construction references only — it does not become part of the profile used for features
Construction lines are dashed reference lines used to define symmetry axes, centers, or guides without contributing to the closed profile of the sketch.
Construction geometry in Fusion 360 is toggled via the Construction button in the Sketch toolbar or by pressing X. Construction lines are displayed as blue dashed lines. They are useful for creating symmetry axes, center points for bolt hole patterns, or reference geometry for constraints. They do not contribute to the closed profile used by Extrude or Revolve operations.
Question 4: In Fusion 360, what does 'suppressing' a feature in the timeline do?
- Permanently deletes the feature and its dependent children
- Temporarily disables the feature so it is excluded from the model but remains editable (Correct answer)
- Renames the feature to distinguish it from active features
- Moves the feature to a separate component
Correct answer: Temporarily disables the feature so it is excluded from the model but remains editable
Suppressing a feature hides its effect on the model without deleting it, allowing you to test designs with or without that feature.
Right-clicking a feature in the timeline and choosing Suppress removes its effect from the current model state without deleting it. Suppressed features appear with a crossed-out icon. They can be unsuppressed at any time to restore their geometry. This is useful for exploring alternate designs, isolating problems, or generating configurations where certain features are absent.
Question 5: What Fusion 360 feature allows you to link parameters between two separate files?
- External reference sketch
- Linked parameter via Manage > Parameters and the External option (Correct answer)
- Direct modeling link
- BOM parameter sync
Correct answer: Linked parameter via Manage > Parameters and the External option
Fusion 360 allows parameters to be linked to an external spreadsheet or another Fusion file via the Manage Parameters dialog, enabling centralized control of design families.
In Fusion 360, the Change Parameters dialog (Modify > Change Parameters) includes functionality to link to an external CSV or, in conjunction with Autodesk Fusion's data management, share parameters across files. This supports design families and configuration tables where a master spreadsheet drives the dimensions of multiple part variants.
Question 6: When you delete a parent sketch that was used to create an extrusion in Fusion 360, what typically happens to the extrusion?
- The extrusion remains unchanged and becomes independent
- The extrusion generates an error or broken feature because it has lost its driving sketch (Correct answer)
- The extrusion automatically converts to a direct-edit face
- The extrusion is deleted along with the sketch
Correct answer: The extrusion generates an error or broken feature because it has lost its driving sketch
The extrusion feature is dependent on the sketch profile; deleting the sketch breaks that dependency and causes a feature error shown in the timeline.
In parametric modeling, features have parent-child dependencies. An extrusion is a child of its driving sketch profile. If the parent sketch is deleted, the extrusion loses its profile reference and becomes a broken feature, indicated by a red error marker in the timeline. You must either restore the sketch or redefine the feature with a new profile to resolve the error.
Fusion 360 Parametric Design and History 2
What does the 'Edit Feature' option in the Fusion 360 timeline allow you to do?