Splicing Instructions

HOW TO SPLICE

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Everything you need to know about splicing!

WHAT IS SPLICING?

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A splice is a way of terminating a rope or joining two ends of rope together without using a knot. Apart from being bulky and unsightly, even a correctly tied knot can cause significant loss of strength to a rope. At Marlow our splicing team have over 150 years of combined splicing knowledge and experience and we offer a splicing service to our trade and commercial customers for bespoke rope assemblies, slings and strops. For sailors and boat owners, we always recommend using your local rigging professional to splice and install your ropes. Find your local Marlow Rigging professional here. For those wishing to splice their own ropes, we have produced a comprehensive splicing guide and videos detailing some of the more common splicing methods  

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SPLICING TOOLS

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When learning to splice, the right tools will make the job much easier. Below is a list of common splicing tools available through your Marlow dealer 

Swedish fids are used primarily for 3 strand and multiplait splicing. They also aid Marlowbraid and D2 Racing splices. 

Braid on Braid Fid Set – Selma fids are used primarily for doublebraid, D12 and D2 splices, but can also be used to aid 3 strand and marlowbraid splices. 

Splicing Needles – Large and small used for Marlowbraid, D2 Racing. Can also be used for the doublebraid splice. 

Excel Control Splicing needle – Used primarily for Excel Control and Excel D12 2.5 and 3mm. 

Other tools and equipment - Sharp knife and/or scissors, tape measure, permeant marker pen, splicing (or insulation type) tape, strong point on your work bench, hot knife or flame for sealing the rope. 
VIEW OUR RANGE OF SPLICING TOOLS AND ACCESSORIES

SPLICES VS KNOTS

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Splices: Most Marlow ropes can be spliced, this is normally the preferred method of termination. A good splice using the recommended method should not reduce the strength of a rope by more than 10%. 

Knots: A knot will reduce the strength of the rope, sometimes very significantly. This loss is caused by the tight bends and compression found in any knot. The amount a rope will be weakened will depend on the knot, type of rope and the material from which it is made but can be up to 60% 

Eye Sizes: Wherever possible the angle formed at the throat of a splice when it is loaded should be 30 degrees or less. This means that the length of the eye when flat must be at least 2.7 times the diameter of the object over which the eye is to be used and the distance from the bearing point to the throat when in use should be at least 2.4 times the diameter. Some materials like Aramids and HMPEs (Dyneema) will require a larger eye with an angle at the throat of 15 degrees or less.

VIDEO TUTORIALS

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D2 Splice

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D2 Racing Splice - D2 and V2
Used for core dependent rope constructions such as D2, V2 etc. Designs where the core contributes most or all the strength and the cover provides protection to the rope. 
Difficulty level 4/5
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Traditional 3-Strand Splice

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Traditional 3-Strand Splice - 3-Strand Polyester, 3-Strand Nylon, 3-Strand Pre-Stretched, Nelson, Hardy Hemp. 
The classic rope comprising of 3 twisted strands and no cover. Splice performed by weaving each of the 3 strands together. 
Difficulty rating 2/5
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Doublebraid Eye Splice

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Doublebraid Splice - Doublebraid and Dockline. 
Used for ropes with a braided core and braided cover which work together. These are usually made of polyester with the strength of the rope fairly evenly split between core and cover.
Difficulty rating 3/5
DOWNLOAD PRINTABLE INSTRUCTIONS
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Doublebraid End-to-End Splice

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Double braid End-to-End Splice - Doublebraid and Dockline.
This splice allows the creation of an endless loop or the joining of two separate pieces of rope. There are many variations of this splice depending on the construction of rope being used.  This tutorial covers standard braid-on-braid
Difficulty rating 3/5
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Locking 12 Strand Splice

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Locking 12 Strand Splice – D12, V12, T12, Excel D12, Excel V12, PS12
Lines consisting of just a 12 strand core and no cover. There are various methods of splicing and locking this but the principles remain the same. Our method shows a  locking method using only one end of the rope also known as a Brummel Lock
Difficulty Racing 3/5
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Marlowbraid Eye Splice

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Marlowbraid Splice – Marlowbraid 
Used for ropes with long lay twisted 3 strand core and braided cover. In these ropes, the majority of the strength is in the core and the type of splice reflects this.
Difficulty rating 4/5 
DOWNLOAD PRINTABLE INSTRUCTIONS
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Control Line End-to-End Splice

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Control Line End-to-End – Control Line
Marlow Control Line is specifically designed to make into endless loops.  It has a tough, strong cover that takes much of the load bearing duties and a small polypropylene core that is designed to be sacrificed in this very neat end-to-end slice.
Difficulty Racing 3/5
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Excel Fusion Taper

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Excel Fusion Taper – Excel Fusion 
Tapering sheets provides often critical weight saving on a part of the rope that is never handle or runs through cleats and bullies.  Excel Fusion is already extremely light, but can be further lighted by doing this simple taper.
Difficulty rating 3/5 
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Simple Centre Take-off

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Simple centre take-off –  any braided rope
A simple technique to ensure a smooth running surface on jib or kite sheets when they run around a forestay
Difficulty rating 1/5 
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