Page 112 - Geoffrey Budworth, Jason Dalton "The Little Book of Incredibly Useful Knots"

Frost knot

This webbing knot was devised in the 1960s by Tom Frost for use in making the loops from

which the short climbing ladders or stirrups known as étriers (see page 98) are suspended. A
bulky but strong doubled version is used to tie together separate lengths of webbing for
climbers’ chest and seat harnesses.

To create an endless strop or sling with a Frost knot, first form a bight in one end; then merely slip

the other end into it (1), and tie all three parts in an overhand knot (2). For a bend or joining knot,
make a bight in one end of one piece of webbing and tie it in an overhand knot (3); make a similar
bight in one end of the other length and follow the first knot around (entering at the bight and
leaving at the standing part) (4). Pull it all tight (5).