Screen Wall
The classic studio exercise made parametric: rule three edge-to-edge lines on a 3.5×2.5″ card, cut two end segments, dial every remaining segment to an exact mountain or valley angle — a paper simulator folds the module live, distorting the sheet near over-constrained intersections just like forced cardstock — then stack the same module into a standing N×M screen wall with rotate/mirror patterns, overlap and stagger. Prints a true-scale SVG cut sheet; saves/loads designs as JSON. Client-side.
1 · Rule three lines
Drag the numbered handles. Line 1 spans the short edges, line 2 the long edges, line 3 is yours — change which edges it touches:
2 · Make two cuts
Click a segment that touches the card edge to cut it (the knife stops just short of the first line it meets). Cuts may not touch each other. 2/2 cuts —
3 · Fold every remaining segment
4 · Aggregate the wall
Click any module in the wall view to cycle its orientation (rotate / flip / mirror) on top of the pattern.
5 · Print
Export → Cut sheet SVG at the top of the page prints at 100% scale — cuts bold, mountains dash-dot, valleys dashed — ready for cardstock, straightedge and knife. Save keeps the design here in the site; Export → Design JSON writes the file this button loads back.