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Stitches per inch spi what you should

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Estimating Thread Consumption 2-4-10

Estimating Thread Consumption 2-4-10

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s = stitches per inch 1.17 yds X 5.20 = 6.08 yds / seam. 6.08 yds/seam X 1.15 = 7.00 yds per seam including a 15% waste factor. ESTIMATING THREAD CONSUMPTION USING ANECALC A&E’s ANECALC thread consumption and costing tool was develop using the Union Special thread consumption formulas. To use this tool effectively, you should do the following:

  Should, Inch, Stitches, You should, Stitches per inch

SEWING MAINTENANCE CHECKLIST

SEWING MAINTENANCE CHECKLIST

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Observe the teeth per inch on the feed dog Generally the following should be found: light weight sewing - 20 - 24 teeth per inch; medium weight sewing - 14 - 18 tpi; heavy weight sewing - 10 - 12 tpi Overedge Needle Plates Check for needle damage or burrs on the needle hole and stitch tongue

  Should, Checklist, Maintenance, Inch, Sewing, Sewing maintenance checklist, Per inch

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