Sewing crêpe, satin and peach fabrics, or You vs. the Pucker Demon

Crêpe, satin and peach fabrics come in several types and fibres, but they always remain difficult fabrics to sew. In particular, most machines have trouble sewing a straight seam along the length of the material - it puckers. Yes, it means the tension is too high, but no, it is not actually too high, and…