This week, Bryan continues the DIY Knot Board Display by demonstrating how to tie the Sheet Bend. He also showcases a couple different variants to the bend, including the Double Sheet Bend and the Slipped Sheet Bend.
Sheet Bend » Bends
(Strength: 1/Security: 2/Stability: 4/Difficulty: 5) See below for what these ratings mean.
A Sheet Bend (aka Becket’s Bend) is utilized to join two lines of different thickness, which may occur when attaching a hauling line to larger line. You’ll want the tails or ends of each line to be facing the same direction for maximum security. Also keep in mind that nylon and polypropylene can slip much easier than other material when tied with a Sheet Bend.
While the title and rating here are for joining two lines of different thicknesses together with a standard Sheet Bend, the strength and security ratings increase to 3 with a Slipped Sheet Bend and 4 with a Double Sheet Bend.
Slipped Sheet Bend
It might seem contrary that a slipped quick-release version of the Sheet Bend would be stronger and more secure, but the additional surface area of the bight created and trapped by the smaller line is what provides this.
Double Sheet Bend
Just like with the Slipped Sheet Bend, the additional wrap during the Double Sheet Bend creates more surface area to bind the bend. Without the bight for a quick release it’s more strong and secure than the Slipped Sheet Bend. The second wrap also reinforces a common Sheet Bend for unwieldy lines or rigging, it can be helpful when different stiffnesses occur in lines you’re trying to tie together.
Ratings
Strength/Security/Stability/Difficulty
Each knot will be assigned a rating from 1-5 (1 representing the lowest score) based on the following four properties:
Strength – All knots will weaken the strength of a rope, however, there are knots that are stronger than others. The scale here will reflect how strong the rope remains with the specified knot.
Security – The security scale refers to how well the knot will stay tied, and resist coming loose under a normal load.
Stability – Stability refers to how easily the knot will come untied under an abnormal load (i.e. the knot being pulled in a direction it was not intended to) A lower score here represents instability.
Difficulty – The lower the number, the easier a knot is to tie.