Page 588 - Bob Holtzman "The Field Guide to Knots How to Identify, Tie, and Untie Over 80 Essential Knots for Outdoor Pursuits"

9. Complete the lashing by tucking the working end between the poles one more time.

Uses: lashing poles lengthwise; extending pole length
Pros: very strong and secure

Cons: time-consuming to tie and untie; uses a lot of cordage

A-frame Lashing

The Sheer Lashing is also the basis for building a sturdy fork or A-frame for

a shelter gable, a bucking horse, a teepee frame, or similar structure. Place
two equal-length poles side by side and tie a Sheer Lashing, but leave the

frapping turns and wrappings relatively loose. The bottoms of the poles can
then be spread out so that the poles form an X, the top angle of which can

support a horizontal pole. It can also be used as a two-man lifting device to

raise a mast or a beam.

584