Clinch Knot vs. Uni Knot [Braid, Mono & Fluoro Knot Strength Tests]
By: Luke Simonds on October 10, 2018
Two of the most well known and used fishing knots are the Clinch Knot and the Uni Knot.
These are versatile knots that are commonly used for snug terminal connections. The Uni Knot is also commonly used to connect two pieces of fishing line together.
These are both easy-to-tie knots that can be whipped up quickly on the water. They are also both relatively strong for how easy they are to tie.
There is some debate about which of these knots is the better one to use and what kind of lines you should use them for.
We wanted to settle this debate once and for all and decided to set up some strength tests to see if the Clinch Knot or the Uni Knot is ultimately stronger.
In this article, I test both of these knots against each other on fluorocarbon, monofilament and braid lines to see which knot is the best to use for each type of line.
Clinch Knot vs. Uni Knot Strength Test Procedure
For this experiment, we did three different strength tests two times each with each fishing line.
We then attached one snap swivel to a stationary object. We attached the opposite snap swivel to a scale using a Perfection Loop and 80 lb mono.
Next, we pulled the line by the scale until one of the knots broke. After that, we switched the knots so the opposite knot was connected to the scale and repeated the process.
Whichever knot broke first was the weaker of the two knots on that type of fishing line.
We repeated this process for each fishing line.
Fluoro Test: Clinch Knot vs. Uni Knot
For the fluorocarbon test, we used 20 lb Berkley Vanish line for the tests.
We attached the Clinch Knot to the side with the scale and the Uni Knot to the stationary object for the first round.
For the second round, we attached the Uni Knot swivel to the scale and the Clinch Knot to the stationary object.
We then pulled on the line using the scale and measured the force and what knot broke first.
Fluoro Test Results
- Clinch Knot to scale: the Uni Knot Broke at about 14 lbs of force.
- Uni Knot to scale: the Uni Knot Broke at about 13 lbs of force.
Winner: The Clinch Knot is the stronger knot to use for fluorocarbon fishing line.
Mono Test: Clinch Knot vs. Uni Knot
For the mono test, we used 20 lb Berkley Big Game mono line.
We repeated the same process for the mono test that we did for the fluoro test.
The results were as follows:
Mono Test Results
- Clinch Knot to scale: the Uni Knot broke first at 20 lbs of force.
- Uni Knot to scale: the Uni Knot broke first at 15 lbs of force.
Winner: The Clinch Knot is the stronger knot to use for monofilament fishing line.
Braid Test: Clinch Knot vs. Uni Knot
For the braid test, we used 20 lb PowerPro fishing line.
We repeated the same process for the braid test that we did for the fluoro and mono test.
The results were as follows:
Braid Test Results
- Clinch Knot to scale: the Clinch Knot broke first at 5 lbs.
- Uni Knot to scale: the Clinch Knot broke first at 7 lbs.
Winner: The Uni Knot is the stronger knot to use for braid fishing line.
Clinch Knot vs. Uni Knot Strength Test Video
In this video, we show you the full experiment for each fishing line and the results of which line is knot stronger.
These tests show that there is a distinct advantage to using the Clinch Knot with fluorocarbon and monofilament lines.
It also shows that the Uni Knot is the better option for braid line.
Another interesting thing we saw was how much stronger monofilament vs. fluorocarbon fishing line is. Check out our mono vs. fluoro abrasion test here to see more about this.
If you have any questions about these tests or have a suggestion for how to improve it, let us know in the comments section!
Don’t forget to check out our knot rankings page to see the strongest knots we’ve tested so far.
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