A section cut slices the model at a spot you choose and removes everything on one side of it. Use it to look inside a wall, see above a ceiling, or check what's packed into a tight space.
Creating a section cut
With Measure off, tap the object where you want the cut to start. It turns purple, and a card opens.
Tap Section.
The model is cut at that object.
Using the section controls
When a section cut is on, a small set of controls sits on the cut. The orange arrow points toward the side being removed.
Move the cut: Drag the hand button to slide the cut forward or back along the arrow.
Flip the direction: Tap the two-arrow button to switch which side of the cut is removed. Use this when the cut hides the side you wanted to see.
Turn off the section: Tap the X to remove the cut and show the full model again.
Tips
Pick an object that sits where you want to look. For example, tap a ceiling tile to cut just below the ceiling, or tap a wall to cut right through it.
Combine a section cut with hiding objects or layers to clear the view even more.