Example: confidence
Stitches per inch spi what you should
Found 2 free book(s)Estimating Thread Consumption 2-4-10
www.amefird.coms = 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:
SEWING MAINTENANCE CHECKLIST
www.amefird.comObserve 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