What are the causes of monofilament line failures?

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What are the causes of monofilament line failures?

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High impact forces from high line speeds against hard abrasive surfaces that create abrasion wear or overstress/breakage at the outlet, the cutting tip or internally within the spool. Further, monofilament line will snap off when rapidly impacting against abrupt obstacles it can’t cut. The line itself overstresses and pulls out as it wraps like a “zoro” whip around an obstacle such as a fence. It breaks off at the eyelet or inside the spool. Many times it welds internally (ultrasonic welding) binding it from feeding out again. Frequently, due to moisture loss from the nylon, it becomes brittle. Nylon requires moisture. When it dries out in the dryer climates, it easily breaks.

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