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I used the 76 and not the 77. The 76 is specifically designed for use with fabrics. It is the same stuff used to glue the felt on pool table slates. If you could get your hands on some type of thin...

I probably should have mentioned that I backed the canvas with thin rubber using 3m spray adhesive to keep the canvas from fraying.:)

I don't know where to access nylon webbing that wide but if you have access to some type of military surpluss store, you can usually find some high quality, heavy canvas that can be cut to whatever...