Sewing a Bra
I love the reddit thread A Bra That Fits. This diagram beautifully shows all the parts of the bra. Stitching a bra starts with accurate cutting, which takes time. Then you assemble cups, assemble the band inset the cups, stitch on elastics and channeling, and finally straps and hooks and eyes. This is a 1-3 hour venture before we even begin to add foams, laces, trims, linings etc.