[rotorwrench]

Third Gen took up the Ford Bolts inventory and that was the only supplier of authentic type pyroxylin coated welt. A person would likely have to make it themselves if no one else does. I think Roy Nacewicz was getting what is called book cloth which resembles the old faux leather that Ford used but has no embossed design pattern on it. It could be sewn with a welt cord on a walking foot machine with the proper size welt foot.

This "book cloth" is basically just like the dope & fabric skin of an old airplane design. Pyroxylin used a little different formula of dope than the cellulose nitrate stuff. I don't know if they used cotton or linen fabric but linen is a bit stronger.