Spent $14 on waxed linen thread instead of my usual spool, and my Coptic stitch sections finally stopped gapping
After 4 books with knots pulling loose on the same signature, I switched from the cheap cotton I'd used since my first class at the bindery on 9th Street, and the tension held from the first kettle stitch to the last, so has anyone else found a thread that just clicks after one try?