Page 81 - Bob Holtzman "The Field Guide to Knots How to Identify.."

Dipping a rope’s end in carpenter’s glue will prevent fraying

Masking tape may be used as a temporary measure only: for example, when
cutting lengths at the store, or when cutting just prior to whipping the ends.

Twine or other small stuff can also be used as a strictly temporary measure to
prevent fraying. Tie Constrictor Knots around the rope on each side of where
you will cut. You can’t readily tie a knot with a rope whose ends are secured in
this manner, but it suffices to keep the ends unfrayed while a whipping is
applied.

Rope ends can also be sealed with heat-shrink tubing similar to that used for

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