I used to think linen thread was just for show until I tried it on a repair job
For years, I used basic polyester thread on all my repairs, thinking it was strong enough. Then, about six months ago, I had to fix a 100-year-old family bible with really brittle paper. The polyester was too stiff and cut into the pages. I switched to a 25/3 linen thread from a shop in Chicago, and the difference was huge. It's more flexible and seems to put less stress on old paper. Has anyone else found a specific material that changed how you handle delicate work?