Issue link: https://docs.hic.us/i/403552
C C h h a a p p t t e e r r 4 4 – – T T r r o o u u b b l l e e s s h h o o o o t t i i n n g g When things go wrong with the sewing process it will be necessary to determine why. Don't ignore problems or hope that they will go away. Attack them head-on and find a solution. Thread Breaks Thread breaks are perhaps the single most aggravating aspect of embroidery. Occasional thread breaks are irritating, but frequent thread breaks are costly, as they result in a loss of production. Every thread break has a cause. It's up to the machine operator to determine what that problem is and correct it. Design Problems Stitch Length Too Short. This is a very common problem with designs that were not digitized for production. A design that runs well on a single-head sample machine will not necessarily run well on, a multi-head machine. Digitizers must be production-conscious and digitize with the operator in mind. Good Digitizers keep thread flowing and minimize short stitches at 20 to 25 points and columns at 10 points. (A 1 0 point column is @ 17 points of thread per stitch.) Metallics require slightly more thread length. Avoid using a bean stitch with metallics. Stitch Densities Too Tight. Digitizers and production operators should communicate to determine proper densities for thread size, material and needle point being used. Rather than increasing density, use more uniform underlay, or fill patterns that cover better at less density. Stitching Over Stitching. When stitching has to be placed over other stitching, use underlay with less density in its base coat to reduce abrasion on top layers of thread. Try to avoid more than two layers of thread whenever possible. Use outline type underlay on the top layer to minimize stitching while maintaining color definition. Material Problems Excessive Sewing Friction. Some materials are either so dense or have abrasive or plastic compounds within them that they build up needle heat. This can www.hsi.us care@hic.us 215