A worked example
160 mm wrist, 10 mm ease, 8 mm beads and no clasp give 24 beads and about 3.133 mm unfilled length.
Estimate equal round beads along their centre-line path.
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Centre-line length = wrist + ease + π × bead diameter. Subtract clasp length, then floor-divide by bead diameter.
160 mm wrist, 10 mm ease, 8 mm beads and no clasp give 24 beads and about 3.133 mm unfilled length.
Approximate circular geometry; ignores bead-hole shape and cord stretch. Test a sample before cutting.
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