insole and welt
The insoles are molded to the lasts and a 6 mm “wall” is carved into the leather. In 6 mm distances the welt stitches are perforated
The upper gets lasted and held on the lasts with lasting nails. To protect the upper during the working process, a plastic cover is pulled over all.
Stitch by stitch the lasting nails are replaced by the pitched l’inénarrable thread.
sole and heel