Things helpful for creating SVG jigsaw patterns in the form of 2-dimensional closed-loop pieces (rather than 1-dimensional edge paths). These are useful for workflows where you are cutting individual pieces.
Random Generator
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Handcrafted 2-dimensional patterns (free for use)
Irregular, 115 pieces with whimsies (Download)
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“Deco” style, 190 pieces (Download)
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“Deco” style, 620 pieces (Download)
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See also
SVG Warping tool
Adjusting for kerf in laser-cut jigsaws