PurlbedPleats and folds › Origami structures
Radial Corner-and-Edge Square Fold
A single square in which creases from each corner and each edge midpoint meet at the centre, alternating M and V. Folded up, it rises into a point (pyramid or tent). A variant adds square creases parallel to the outer edge (concentric frames).
- Two beds
Machine types that can knit it
Demo swatch
Drawn for: Double-bed hand flat (V-bed)Approximate preview worked out from the bed chart, not a photo.
The full card
- What it looks like
- A single square in which creases from each corner and each edge midpoint meet at the centre, alternating M and V. Folded up, it rises into a point (pyramid or tent). A variant adds square creases parallel to the outer edge (concentric frames).
- How it behaves
- Collapses into a single peaked form. It cannot be tessellated.
- How it works
- Diagonal folds running corner to corner, plus vertical and horizontal folds running edge to edge, all through the centre, with alternating beds by type and angle. The concentric variant adds horizontal and vertical fold segments that start and stop at the frame corners.
- Machines
- Needs a double bed. Best on fine-gauge V-bed. The piece size is limited by needle count and weight.
- Parameters
- Finished square side S (needles and rows from the tension swatch), number of concentric frames. 1. Swatch and finish it, then compute needles and rows for S. 2. Chart all crease lines. 3. Knit, moving the diagonal bands toward the centre and then away again.
- Charting
- An X of diagonals plus a central cross, colours alternating per crease.
- Limits and common problems
- It must finish exactly square to fold symmetrically.
- Combines with
- origami-crease-translation.
- Pieces and assembly
- A single object, e.g. a lid, roof, or cap tip.
Written in our own words from machine manuals, knitting references and swatching. Knit a test swatch before a whole piece.