The Core Dependent Eye Splice is used to create a permanent loop at the end of a rope. It is intended for double braid ropes with cores made of Dyneema®, Spectra®, Plasma®, Vectran®, Technora®, Kevlar® and other high modulus fibres or any combination of these fibres.
It is important to note that when we reference a “fid” or a number of “fid lengths” within these splicing instructions, we are referring to a “full fid length” which is calculated at 21 x the rope diameter. If you are using fids for your measurements, you must be sure to account for the type of fid you are using i.e. “half 10.5x, long 14x or full fids 21x”.
Make “mark 1” 2 fid lengths (42 times the diameter of the rope) from the bitter end.
Tie a simple knot in the rope approximately 10 fid lengths from “mark 2” or further and as needed. Form the desired eye and make “mark 2” opposite of “mark 1”. (If you are installing a thimble, form the eye around it and make “mark 2” opposite of “mark 1”.)
From “mark 1”, measure a ½ fid length (or 10.5x the diameter of the rope) away from the bitter end, at this point, carefully spread the cover strands and make “core mark 1″.
From “mark 2”, measure a ½ fid length away from the bitter end and once again spread the cover strands and make “core mark 2” as shown.
Hold the rope firmly where the 2 “core marks” meet.
Now milk/smooth the outer core over the buried core to draw the tapered end of the buried core inside the rope.
The splice should now look similar to this step’s corresponding photo.
From the simple knot, work/smooth/milk the cover toward the splice.
An amount of core will be drawn into the cover during this process.
Place the eye on an anchor point as shown in the “Double Braid Eye Splice” and continue until the “core marks” and all exposed core has been covered.
We do recommend the use of a lock stitch to hold the eye in place during zero load conditions. (The long or longer straight bury instructions include instructions on stitching)
Additional methods for setting the eye on larger diameter rope or slightly tighter braided rope:
With the loop/eye ON the anchor point, tie the rope at the slipknot (made in Step 3 of Stage 1) to a strong fixed point or to another rope with controlled tension or alternatively, enlist the help of another person and have them hold the slip knot and pull on the rope. This helps in two ways, firstly, the added tension reduces the diameter of core, cover and crossover to be buried and secondly, it frees you up to use both hands to milk the cover from the slipknot towards the eye.
With the loop/eye OFF the anchor point, tie the rope at the slipknot (made in Step 3 of Stage 1) to a strong fixed point, now tie a smaller rope to the cover side of the loop close to the crossover point and apply tension to the smaller rope with the careful use of some mechanical advantage, this frees you up to use both hands to milk the cover towards the eye.
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