The Scaffold knot is an effective way to form an end loop in a line. The Scaffold knot can for example be used to attach a carabiner to a climbing line. The knot can get very tight when its being loaded but if you take the carabiner out it can be untied easily.
But you can also insert a thimble. A thimble is an reinforcement that can be inserted into the loop to protect the rope from wearing out. It also prevents the loop from closing. Thimbles are often used it nautical applications and can be found at boat and yacht shops. When a loop is reinforced with a thimble its often referred to as a hard eye.
Make sure you tie it right especially when using it in climbing. When tied wrong the Scaffold knot might become undone easily.
FAQ Scaffold knot
What is the purpose of the Scaffold knot?
The Scaffold knot can be used to attach a carbiner to a line when climbing. But it can also be used to attach a rope to a railing or other object.
When you insert a thimble in the loop the Scaffold knot becomes an hard eye.
Is the Scaffold knot safe to climb on?
Yes when tied right the Scaffold knot is safe to climb on. But it is also know to be easily tied wrong and then it's not reliable at all.
How do you create a hard eye?
Use the Scaffold knot to form a loop at the end of the line. Then insert a thimble into this loop and tighten it.
A thimble is a reinforcement that can be inserted into the loop the prevent the rope from wearing and the loop from closing.
What is a thimble?
A thimble is a reinforcement that can be inserted in a loop to prevent the rope from wearing and the loop from closing. It is often used in nautical applications. Thimbles can be found at boating stores and the better hardware stores. The Scaffold knot is a reliable knot that can be used to create a loop in the end of the line which can be reinforced with a thimble to form a hard eye.