The seven cut shapes
Flat, wave, zigzag, sawtooth, brick, pyramid, jigsaw
The cut surface itself can interlock and resist shear — useful alongside peg joinery, and the whole point of "none" mode.
- Flat — a plain planar cut. Default and fastest.
- Wave — sine-wave undulation. Resists lateral sliding once mated.
- Zigzag — triangle wave. A sharper interlock than the sine wave.
- Sawtooth — asymmetric ratchet. The pieces mate in one direction only.
- Brick — square-wave steps. Pieces lock like masonry and can hold without pegs.
- Pyramid — a 2D grid of square pyramids. Locks in both in-plane directions (the 1D shapes vary along one axis), so it resists shear from any direction without pegs.
- Jigsaw — alternating puzzle knobs whose heads are wider than their necks, so the pieces hook together and cannot be pulled apart along the cut; they slide together from the side. The only shape that resists pull-apart as well as shear. Clearance for the slide comes from the joinery tolerance. Pair it with "none".
Amplitude, period and phase offset are adjustable; phase offset shifts the pattern along the cut so peaks line up with model features.
Cut shapes are a Pro setting in step 2. For connectors that go in the pieces rather than shaping the seam, see the joinery modes.