Sewing Thread Consumption
Estimate the thread consumption of a seam by multiplying the seam length by the stitch consumption factor (the ratio of thread used to seam length — ~2.5 for lockstitch, more for overlock and coverstitch). Knowing the thread consumption per piece is essential to budget, buy cones and avoid stopping production for lack of thread. Enter the seam length and the consumption factor.
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Sewing thread consumption
How much thread does a garment consume? More than it looks. Thread does not run along the seam in a straight line: it loops at every stitch, going up and down between the plies of fabric. That is why consumption equals the seam length multiplied by a factor set by the stitch type: ~2.5 for the lockstitch (straight-stitch machine), 4 to 7 for the overlock (which wraps the edges) and more still for the chainstitch and the coverstitch. Multiplied by the total seam length in the garment and by the production volume, it gives the kilometers of thread to buy — vital information for costing the job correctly and for never stopping the production line for want of cones. Thread thickness, fabric thickness and stitch density refine the figure. Enter the seam length and the consumption factor.
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The results provided by this tool are for general informational and educational purposes only and do not constitute professional, financial, medical, legal, tax or accounting advice. Always confirm important decisions with a qualified professional and official sources.