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What Fluorocarbon Knots do you use??

S.D. Ice Angular

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What Fluorocarbon Knots do you use??

I bought some Spiderwire “Ultracast” 100% Fluorocarbon in a 12 Lbs test and clear.

I bought it to put on the end of my lead core line. When I tie it to the lead core line I use two over hand knots.

I first put (2) overhand knots on the lead core line about 12” up and leave them loose. I cut about 4” of “Core” off the end leaving the braided sleeve. I then mark the fluorocarbon with a black marker and insert it into the cloth sleeve then slide down the knots and tighten up about an inch apart.

Here is the PROBLEM:

I can break the fluorocarbon away with no effort at all. So then I just took a piece of fluorocarbon and put (1) over hand knot in it and again it takes very little effort to break it right at the knot.

I did tie a rapala knot just to see if that worked and it seemed to but I don’t really trust it. So now I have a $19.00 spool of fluorocarbon I don’t know how to use. I ended up just putting mono back on the lead core leader (for now anyway).

Any advice would be appreciated…

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Loosely general, spoolable flourocarbon are always weaker especially in terms of knot strength compared to the leader material. A simple overhand knot is the nemesis of flourocarbon line (and nylon lines too).

For line joining I typically would use a uni to uni knot. Not familiar with how that will impact leadcore line. If you insist on threading the flourocarbon into the core of the braid sleeve, then you might want to tie over the sleeve at least two nail knots with some fireline or another thin nylon and then add super glue over the knots to secure everything.

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I've never used leadcore.

Whenever I fish, I almost ALWAYS am using braid tied to a slightly bigger diameter fluorocarbon.

I use a uni-to-uni knot to tie them together.

I've had this fail using fireline braid, which cuts through the fluorocarbon (25lb even, pretty thick stuff) when the knot tightens. I get the feeling it would cut through 25lb mono as well however.

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Uni uni is very strong for fireline to flouro, but I've never tried it with lead core. Might be better ones out there for that.

I would ditch the overhand for use in any fishing knot. Has a very low percentage of line strength.

Also with fluoro, you should lubricate it quite well while cinching the knot tight. Saliva, lake water, whatever, it will help keep the heat down.

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