How to create a second part in the same file in Autodesk Fusion?
Short Answer
Yes — in Autodesk Fusion, you can create a second part in the same file by making a new component with New Component, then activating it before creating sketches or bodies. This is the most common professional method for multi-part design in one Fusion file. Limitation: separate manufacturing files may still be preferred for some workflows.
What You Need to Know Before
Warning: If you create new bodies without activating a new component first, Fusion may place the geometry inside the wrong component or the top-level assembly. This causes broken structure, bad joints, and confusion later in drawings, CAM, or bom workflows.
How to Create a Second Part in the Same File in Autodesk Fusion
Command: New Component
Shortcut: None by default
Quick Steps:
- In the Browser or from the toolbar, right-click the top-level component and choose New Component.
- In the dialog, set the component type and make sure the new component is created in the correct parent; if needed, enable options such as creating from an empty component rather than from existing bodies.
- Activate the new component by right-clicking it in the Browser and choosing Activate, then create sketches, features, and bodies inside that component.
Variables & Settings
Key Setting: Activate Component
This Browser option controls where new sketches, bodies, and features are created. If the wrong component is active, Fusion will place geometry in the wrong location in the design structure.
Why it Fails
Cause 1 (Geometry): The second part is created as a body inside the first component or root component because the new component was not activated before modeling.
Cause 2 (layers/Locks): The Browser state can mislead you if a component is hidden or not active, making it seem like the part was not created or was placed incorrectly.
Cause 3 (Command/Logic): Using New Body instead of New Component creates separate solid bodies, not separate managed parts for assembly structure, joints, and BOM use.
Quick Fix & Best Practice
Quick Fix: Right-click the intended component in the Browser, choose Activate, then use Move/Copy or cut features as needed to correct misplaced geometry.
Manager’s Verdict: Use New Component for every real part you expect to assemble, document, or manage separately. Use multiple bodies only for quick concept modeling or when the design does not need assembly structure.
FAQ
Can I have multiple parts in one Fusion file?
Yes, by creating multiple components in the same design.
Is a body the same as a part in Fusion?
No, a body is just solid geometry, while a component is the proper part container.
Can I convert an existing body into a component?
Yes, use the Browser and create a component from the body.
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