Berkley Nanofil LV

Thu 02 May 13


Berkley have been manufacturing lines for decades and are well known within UK angling with lines such as Big Game and braids such as Fireline being used by many anglers as first choices. Recently Berkley created a bit of a storm within the industry by releasing a line that is neither a mono nor a braid. This line is called Nanofil.

Nanofil is made out of gel-spun polyethylene. Nanofil’s construction consists of hundreds of Dyneema® nanofilaments that are molecularly linked and shaped into a unified filament. Dyneema gives Nanofil a high linear strength and feels neither like a mono nor a braid. Nanofil is quite stiff straight off the spool that it is supplied on, which might put some anglers off, but in reality after a few uses, it does soften a little. As you would expect from a high tech product such as Nanofil, the diameters are extremely low for the stated breaking strains. We were sent the 0.20mm diameter Nanofil which has a stated breaking strain of 12.649KG (roughly 28lb in old money). Without a doubt this is a very high breaking strain to diameter ratio. Berkley say that Nanofil is the thinnest line that they have ever produced, and looking at the label, I am not going to disagree!

Nanofil is a floating line, and a very bouyant one at that. This makes Nanofil a fantastic choice for spod, marker or lure/drifter fishing situations, as well as for the match angler who needs to fish at long distance with a feeder or lead. For actual angling mainline work in the carp or specialist situations, the angler will need to backlead and use tight lines with Nanofil to stop the line lifting off the bottom and creating loops. This should not be a problem for most anglers fishing at extreme distances as they will generally be using large indicators as well as tight lines for maximum indication. Nanofil is also not as abrasion resistant as some other lines we have tested, but this will be down to the low diameter more than anything else (obviously less material means that it will break quicker when rubbed over a rough surface). This makes Nanofil a specific situation line rather than an all rounder, in my totally honest opinion. Nanofil also feels like a braid in use as the material has no stretch at all. If you are not accustomed to using braids, it is recommended that a monofilament leader of at least 2 rod lengths is used to give some buffer in the setup. With casting heavy leads, a shockleader is essential for the safety of other anglers and also to save you money in not cracking off on the cast!

During testing, Nanofil performed very well with most knots. With a typical 4 turn Grinner knot, with the 0.20mm diameter line we were sent, we managed to get 25lb 11oz knot strength. With a Palomar knot, the results were similar with a breaking strain of 25lb 2oz. Berkley recommend what they call the “Nanofil Knot” for attaching to swivels or hooks, which is essentially a double twist Palomar. With the “Nanofil Knot”, we managed the best knot strength of 27lb 5oz.

On the diameter tests, the stated diameter on the spool was exactly what the digital micrometer read on every random reading that was taken.
The original Nanofil was available in clear, but recently Berkley have released a LV (low visibility) version in a lovely olive green colouration.

Final Thoughts

Berkley Nanofil is now being used by some of the best anglers in the country for extreme distance work or where they require extreme sensitivity. Without any shadow of a doubt, you will put yards on your casts with Nanofil, and on my testing I managed to put at least 30 yards on my cast compared to my standard 0.35mm monofilament that I use for the majority of situations, without changing my casting technique. I think that with a change in my casting technique and using a slightly larger lead, I could easily put 50 yards or more on to my cast (and I am not a great caster anyway!) As with all thin lines, it is essential to use a finger stall or casting glove when casting heavy weights to stop the line cutting in to your casting finger (which is a painful experience and can then leave a wound open to infection). A 270 metre spool of Nanofil will cost you around £34.99 which might seem expensive, but it works out as good value when you consider that the material does not deteriorate like monofilament lines do in UV light. To get the most out of the line, when it looks worn, simply reel it onto another spool to reverse it and you have brand new line once again.


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