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A 3D model,
flattened for you

No account needed — sign up later if you want to save your projects online.

A 3D-rendered armor helmet next to its flattened printable pattern pieces, with a physical foam-and-paper helmet build in progress on the workbench
  • OBJ, STL, or glTF
  • Mark your own cut lines
  • Print-ready pattern
  • Sends straight to Poster Maker

Continue an unfold

How it works

Drag to rotate the model. Click an edge to toggle it between cut (separates into pieces) and fold (stays joined). Unfolder starts with a sensible proposal based on the model's own sharp creases.

Upload OBJ, STL, or glTF

Your 3D model is only ever read by your own browser — it never gets uploaded to be processed on our server.

Mark your own cut lines

Unfolder proposes a sensible starting set of cuts — drag to rotate the model and click any edge to toggle it.

A print-ready pattern

Arrange the flattened pieces on the page, then send the result straight to Poster Maker to tile and print at true size.

Check scale with a reference avatar

Drop in a parametric mannequin sized to your own measurements to judge real-world proportions before you cut — a visual reference only, not wired into the pattern math.