Can you project geometry from one sketch into another in Autodesk Fusion?
Short Answer
Yes — in Autodesk Fusion, you can project geometry from one sketch into another using the Project command, which is the most common professional method for reusing edges, profiles, and reference shapes between sketches. This creates associative sketch references that update with model changes. Limitation: projected geometry can fail if the source changes too much.
What You Need to Know Before
Warning: Projected sketch geometry in Fusion is usually linked to the original source, so deleting or heavily editing the parent edge, face, or sketch can break references and turn downstream sketch entities invalid. This commonly happens after timeline edits or feature reordering.
How to Project Geometry from One Sketch into Another in Autodesk Fusion
Command: Project
Shortcut: P
Quick Steps:
- Edit the target sketch, then go to Sketch tab > Create panel > Project/Include > Project.
- Select the sketch geometry, model edges, or face edges you want to bring into the active sketch.
- In the dialog, keep Projection Link enabled if you want associative updates, then click OK.
Variables & Settings
Key Setting: Projection Link
Expert Setting: When Projection Link is turned on, the projected geometry remains associated with the source and updates when the original changes. Turn it off only when you need an independent copy that will not react to later model edits.
Why it Fails
- Cause 1 (Geometry): The original geometry was deleted, replaced, or topologically changed, so Fusion loses the projected reference.
- Cause 2 (layers/Locks): The source sketch or component is hidden, suppressed, or not active in the expected design context, making selection or update behavior confusing.
- Cause 3 (Command/Logic): You projected into the wrong sketch, or used linked projection where a stable, non-associative reference was actually needed.
Quick Fix & Best Practice
- Quick Fix: Re-edit the target sketch, run Project again, and reselect the current source edges with Projection Link set correctly for your design intent.
- Manager’s Verdict: Use projected geometry for stable references and parametric workflows, but avoid over-linking critical production sketches when upstream geometry is likely to change often.
FAQ
Can fusion project edges from solid bodies into a sketch?
Yes, the Project command can reference model edges and face boundaries.
Does projected geometry update automatically in Fusion?
Yes, if Projection Link is enabled and the source still exists.
Can you edit projected lines directly?
No, linked projected geometry is reference-based and must usually be changed at the source.
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