31 lines
1.1 KiB
Markdown
31 lines
1.1 KiB
Markdown
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`unfold` reads a binary STL file on standard input and generates a
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SVG that contains the triangles "folded flat" so that they can be
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laser cut. It will output multiple groups in the SVG file that
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will need to be re-arranged to fit on the laser cutter bed.
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More info: https://trmm.net/Unfolding_STL
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This is a work in progress -- it is not yet feature complete. Current features:
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* Collision detection works to build a non-overlapping set of triangles.
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* Coplanar triangles will be merged if possible.
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* Mountain/valley folds are marked. Dashed line means valley fold.
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* Starting face can be selected or randomly chosen; some produce better results than others.
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* `stl-convert` script can convert OpenSCAD ASCII STL files into binary STL files for `unfold` to process.
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Among the features that it could use:
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* A better heuristic for finding the maximum non-overlaping set of triangles
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(Currently breadth-first search is used, with a slight preference for coplanar
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triangles)
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* Tabs for securing parts together.
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* Collapsing of very small or very thin triangles.
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