V Pleats · Linear
V pleats by mirroring cross folds across vertical folds.
V Pleats · Radial
V pleats by mirroring cross folds across radial folds around a centre.
Hypar Generator
Any convex polygon given concentric offset contours plus corner-to-centre diagonals to create hyperbolic-paraboloids.
X Span Generator
An X-span grid generator, allowing parameter variations in regular and irregular grids.
Wave Generator
Fold lines in x and y at alternating step / jump spacing, from a corner or centred, with an optional edge bend.