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Does Super Glue reduce a knot's strength, such as fluorocarbon to braid?

Dear Captain"Does Super Glue reduce a knot's strength, such as fluorocarbon to braid?"

Hello Jerry,

I get literally thousands of questions from around the world. I have to say, yours are by far the best and most technical where people can learn from them.

Dave Knots
Catching fish effectively requires perfect knots.

Super Glue does not in anyway reduce the strength of your knot, whether you use braid to fluorocarbon or braid to saltwater monofilament leader. About eigth years ago, I spoke with a professional angler from Australia. His name was Max and he was doing research on this exact subject. He was testing Spectra and Dyneema lines (Braided lines). His results were the following:

Any braided line knot can be tied up to 100% if you added one drop of Loctite 406, which is a very thin type of superglue that wicks into the knot (it is a cyanoacrylate). It does not bond to the braid but penetrates all the micro-spaces in the braid and has a very high shear strength. If I recall correctly, he said the drop of glue keeps the knot from slipping and reduced the stress that was concentrated at the first turn in the knot which was the most important.

According to Max, the Loctite 406 has a very low viscosity and can penetrate the fibers, which is good. The regular super glues are of a higher viscosity (thicker) and will not wick in-between and down the fibers of braid. The super glue will just sit on top.

Now for more! Loctite 406 does not bond well to the braids, like I said above; it penetrates it. But because the Loctite 406 fills those spaces in the braid it forms a plug through the knot, therefore making a stronger connection. You can add a surface activator which will bond it in two steps. Max mentioned a two-step glue, but I do not recall the name.

He said he would use one drop in the middle of each knot. You don't want the blob of glue to get too big and too brittle.

One more thing, both Dyneema and Spectra are Gel-Spun Polyethylene Fibers used in all the brands of braided fishing lines. They were invented and patented by DSM High Performance Fibers in Holland. Dyneema is the registered trademark of DSM HPF Nippon-Dyneema, Japan.

Spectra is a registered trademark of Honeywell, which is the license holder for production in America.

They are both Gel Spun Fibers; every millimeter of Spectra braid comes from the USA and out of Honeywell Corp. Every millimeter of Dyneema braid comes from Japan and out of DSM HPF Nippon-Dyneema Corp. So there are only two braided line manufacturers in the fishing industry!

Years ago I added some super glue to my knots and it hardened the knot. It definitely locked the knot from slipping, but I wasn't sure after it hardened the knot, if it then weakened its shock strength. If your knots are tied correctly they will be efficient enough.

The newer super-slick braids that have come out definitely need a few extra wraps or turns to secure them from slipping. With these new slicker lines it might be a good idea to test out some glues to your line to leader connections. Let me know what your results are.

The photo is me teaching 100 children how to tie proper fishing knots -- that stay knotted!

Thank you for sending in your question to The Online Fisherman, "Where You Count More Then The Fish."

One of my other questions addresses the differences between types of lines.

Captain David M. Rieumont
The Online Fisherman Inc.
www.theonlinefisherman.com

 



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