Folks have asked me about this before so adding this here in case it can be useful to some. This is a little video where I show my method for replacing the original bellows on an 8x10 Deardorff. I don’t claim this is the factory way to do things but it’s the way I do it which keeps things clean and has worked for me for years. Hope this is helpful. Deardorff 8x10 bellows replacement video link.