What is a ʼSection Analysisʼ (Cutaway view) in Autodesk Fusion?
Short Answer
Yes — in Autodesk Fusion, a section analysis is a temporary cutaway view that lets you inspect internal geometry by slicing through a model with a plane. The fastest standard method is the Section Analysis command from the Inspect tools. It is visual-only and does not create actual geometry or an editable section body.
What You Need to Know Before
Warning: Section Analysis only changes the display of the model, not the model itself. A common mistake is assuming the cut can be exported, dimensioned as new geometry, or used directly for downstream manufacturing without creating a real sketch or sectioned design feature.
How to Create a Section Analysis in Autodesk Fusion
Command: Section Analysis
Shortcut: No default keyboard shortcut
Quick Steps:
- Go to the Design workspace, then open the Inspect panel in the toolbar and click Section Analysis.
- Select a plane, planar face, or construction plane to define the cut location.
- Use the on-screen manipulator or Offset value to move the section, then confirm with OK and toggle visibility later from the Browser under Analysis.
Variables & Settings
Key Setting: Offset
This controls how far the cutting plane is moved from its selected reference. In practice, Offset is the main professional setting for inspecting internal clearances, wall thickness, interference zones, and assembly fit without redefining the section plane.
Why it Fails
Cause 1 (Geometry): The selected reference is not planar or does not produce a meaningful cut through the target body, so the section view appears empty or misleading.
Cause 2 (layers/Locks): The body or component is hidden, isolated incorrectly, or a visual style setting makes internal edges hard to read, which can make the analysis look broken.
Cause 3 (Command/Logic): Users expect Section Analysis to generate sketch profiles, drawing sections, or manufacturing geometry, but the command is only a viewing analysis tool.
Quick Fix & Best Practice
- Quick Fix: Create or select a proper Construction Plane, then rerun Section Analysis and adjust the Offset until the cut passes through the exact area you need to inspect.
- Manager’s Verdict: Use Section Analysis for fast design review, clash checking, and internal inspection during modeling. Avoid relying on it when you need documented section views, editable profiles, or production-ready geometry.
FAQ
Can Section Analysis modify the model in Fusion?
No, it only affects display and inspection.
Can I save more than one section analysis?
Yes, multiple analyses can be stored and managed in the Browser.
Can I use Section Analysis in assemblies?
Yes, it is commonly used to inspect internal fit and component relationships in assemblies.
.