Unfold · STL to Paper Net · joshhicks.info

Model

Drop an STL, or click to choose

Size

Longest dimensionmm

The file's own units are read as millimetres to start. Change this to rescale the whole net.

Pieces

One piece

Searches for a net with no overlaps. If none exists at this detail, the model is simplified step by step until one does. The sheet size never splits the net.

Minimum faces

Simplification stops here. Lower it to allow a rougher model; raise it to keep detail even if that means more pieces.

Search times

Tabu search over the unfold tree (Zawallich 2023). Simplification only starts when search runs out of time.

Sheet

Preset

Sheet sizemm

Marginmm

With one piece on, the sheet is only a reference drawn behind the net. With it off, pieces that would not fit are split and every sheet becomes its own SVG.

Tabs & labels

Glue tabs

Tab height / anglemm · °

Edge numbers

Matching numbers glue together. Numbers go on a green engrave layer.

m / v marks beside folds

Folds share one colour, so each gets a small green m or v on the scored face.

Laser

Score face

Valley strategy

Dash / gapmm

Legend text on sheet

Export

Cut red · folds blue · numbers and m/v marks green. 1 unit = 1 mm, 0.1 pt strokes.

Faces fold along a maximum-length spanning tree; overlapping or oversize pieces are cut apart. Mountain and valley are for the face you score. Models never leave the browser.

No WebGL here

The 3D fold view needs WebGL. The Net view and the exports still work.

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