Thursday, March 27, 2008

Stopper knots

Stopper knots

String and cord are not cheap so, to minimize waste from fraying, you may tie and overhand knot (1) in the end. The overhand knot needs no explanation -we can all do it- except to reiterate that it reduces the breaking strength of rope or cordage to a mere 45% of the unknotted line. If the working ends is not pulled completely through, leaving a draw-loop, a somewhat stronger (45-50%) stopper knot is made (2), which can be used to restring musical instruments. To secure something bulkier, tie an overhand knot in the bight (3)

To prevent jib leads, main halyards, flag halyards, etc., coming unreeved from blocks, fairleads or other slots or holes, use a figure eight knot (4-5). This knot apperas to have been named by Darcy Lever. With or without a draw-loop, it is more easily undone than an overhand knot, and with one it may be slightly stronger (45-50%). do not leave it flat but pull the standing part so that the working end is pulled over and trapped beneath the bight.

Altough bulkier than the overhand knot, it does not have a larger diameter (contrary to ehat many knot enthusiasts will tell you). It will pull out of the same size hole as the overhand knot. If you need to use something bigger, choose Ashley's stopper knot.

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