Does anyone have any experience or tips on this. I've got a No2 Autographic Brownie that I've been playing with, and it appears that this stirring from its slumbers has caused a few pinholes to appear in the bellows. The bellows themselves appear to be a loose weave cloth that has been impregnated with a resin type material. A good analogy would be like waxed cotton fabric. The pinholes have appeared on several of the folds of the bellows. Can anyone suggest something that I could apply to the cloth to seal it and make it light tight. Its got to be flexible enough to allow the bellows to move, yet robust enough not to flake off. In theory I could remove and replace the bellows, but I would like to keep everything as original as possible. The thing has survived the best part of a century already, so I'm not looking to gut it and bin it. Its earned some rights.