What do I check when ply-shift occurs?
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- Presser bar pressure too high
- Unsuitable sewing parts (needle plate, feed dog, presser feet)
- Unsuitable machine version (coose different feed type: e.g. needle feed, differential feed, top- and bottom feed, puller feed)
- Position of feed dog in needle plate, also in relation to top surface
- Presser foot not smooth enough (damaged presser-foot shoe; teflon feet and roller pressers have better friction properties for certain sewing materials)