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Section view

Cut the whole scene with one plane to look inside it: everything on one side is cut away and the inside of the cut is drawn flat.

A section view shows what is inside. One plane goes through the whole scene, everything on one side of it is cut away, and the cut is drawn in one flat blue, so a hollow part reads as solid where the plane goes through it. It is for looking, not for working: while it is on, nothing can be picked.

How to use it

  1. Press CtrlK, type section and choose Section view.
  2. A Section pill appears at the top left of the view, with a small card under it. Choose the axis: X, Y or Z.
  3. Drag Position to move the plane from one end of the scene to the other. The number is a share of the scene’s extent along that axis, from 0 to 100 %; click it to type one.
  4. Press Flip to keep the other side.
  5. Press Esc, or click the Section pill, to switch it off. The scene is as it was.

What works while it is on

  • The camera: orbit, pan and zoom as always.
  • The panels of the right sidebar. Exploded view moves the parts apart and the cut faces go with them.
  • Hiding a part, with its eye in the tree.

What does not

  • A click on the view or on a row of the tree selects nothing, and the view does not light up what is under the pointer. Whatever was selected is cleared when the section starts. CtrlA is ignored.
  • The CAD edge lines and the wireframe are not cut, and a transparent part gets no cut face.

Pick how you run it.

In your browser

MeshOptimiser Web

Try the app in a tab. Nothing to install.

On your machine

MeshOptimiser

The full app. Windows and macOS.

Free
Free
Browser tab
Your computer
Files stay local
Files stay local
STEP to GLB
STEP to GLB
Clean-up tools
Clean-up tools
Part library
Part library
Folders and CLI
Folders and CLI
Claude
Claude
Works offline
Works offline

Web opens a sample gearbox first and needs a window 960 px wide. Best in Chrome: Safari on a Mac can lag.