Has anyone know about "Harpcloth?"
I have a requirement for old (drawing dated 1955) Lockheed C130 parts made from Harpcloth. The drawing nomenclature are "G.F.E. MX-140/AP Harpcloth, spec NAVAER M-721" and "GFAE MX-2097U Harpcloth."
I've been around aircraft...