Today I cut the dark charcoal wool /cashmere blend fabric and interfacing for this winter coat:
The interfacing is non-fusible hymo which has horse hair in it. I looked for it, and yep, it's really there. There is black hair wrapped around the thread. It's the hair from the horse's tail and it helps keep the fabric and the interfacing snug together. The horse hair kinda snags the fabric at a microscopic level. When I laid the fabric on top of it, the two fabrics immediately stuck together really well.
Do you ever wish you were close to the garment district so you'd have access to all the right supplies? Yes, I do, too. But I remembered that LindsayT has a detailed directory of stores in the NYC garment district, so I went right to her blog and found Steinloff & Stoller's phone number. I called them on Thursday morning and I had the hymo at my house by Friday afternoon! And their prices are good, too.