As many others before me, I am exploring the idea of creating my own LF camera. I have been a cabinetmaker for 28 years, now retired. I have the tools needed. My current obstical is the light trap for the filmholders. I disassembled a broken filmholder and have not been able to locate any simular finger stock. I have spent numerous hours on the internet looking for alternatives. I have considered velcro, velvet and other materials. I am just wondering what fingerstock others have had success with?