Which cloth tape is the most permanent?

[T.G.]

To everyone thanks so much for the input from your own experiences with the two tapes.

[jwaddison]

I haven't used bookbinder's or gaffer's tape, but what I have used is the black fabric tape for wrapping hockey sticks. I've only used it to repair film holder flaps, not on a bellows. It's a pretty heavy-duty tape though, and might interfere with the bellows movement. It's lasted years on my film holders without a problem.

[jp]

I've used tennis racket tape (probably like jw's hocket stick tape) as a friction surface on my tripod head, and it's stayed in place perfectly for two years. I'd use it on bellows too if I had to. If it's an old rat-rod beater camera, use some tape or paint. If it's gotta look good, go for new bellows.