Mirror
Edits on one side happen on the other side too.
Mirror builds both halves at once. Turn it on and an edit on one side happens on the other: move a ring, pull a face Out , make a Cut . Each pair of edits is one undo step.
The Mirror button is at the top left of the canvas, in portrait and in landscape. It is off when a fig opens. It is hidden in Add; placing pieces is never mirrored.
The axis chip
While Mirror is on, a chip beside the button shows the axis: left–right, front–back, or up–down. Tap the chip to move to the next one.
What it applies to
Mirror copies ring and corner moves in Adjust, face tools in Build, drawn shapes, and cuts. It does not copy placing new pieces in Add. It keeps an even fig even; it does not make an uneven fig even. Each piece’s mirror plane runs through the piece’s center, set when the piece was placed.
When the other side has no matching spot, the edit applies to the edited side only and a hint says so. Shapes drawn on round surfaces are not mirrored; the hint says when.
The Paint tool has its own Mirror switch, Off or On, in its settings. With it on, strokes are applied to both halves of the face. See Paint .