A Relentlessly sharp blade...

Product review

For centuries, knife makers have tried to solve the problem of “edge dulling” by focusing on improving the rate of wear by making the blade as hard as possible so it wears more slowly and stays sharp as long as possible. The problem with this approach is that the blade edge will become dull and the harder the blade, the harder it is to sharpen, and the more brittle the edge.

The revolutionary Relentless™ Fillet Knife takes a completely different approach, focusing on the way the blade wears instead of the rate of wear. Relentless’ patented Perpetual Edge™ Technology was inspired by nature’s solution to preventing edge wear and replicated the self sharpening teeth of the beaver, which has a relatively soft “dentin” back side and a really hard, iron-fortified enamel on the front. This creates a differential in hardness between the front and the back and which allows the softer dentin back to wear more quickly relative to the harder iron-fortified front edge and leaving a thin, razor sharp edge. This is, essentially, a perpetual, lifelong edge that sharpens as it cuts.

laser deposition. The carbide and diamond compound acts like the ironfortified enamel on the beaver tooth, creating a differential hardness and resulting in a sharp perpetual edge that continually sharpens as you use it. This patented Perpetual Edge™ Technology is exclusive to Relentless and unlike anything else on the market.

Invariably, the first thing people notice on a Relentless™ Fillet Knife is the extreme grippiness of the True Grit handle. The handle is made of a glass reinforced ABS but covered with the same gritty material used to create the non-slip surface found adjacent to swimming pools. This ensures you won’t lose your grip while filleting even if you have wet or slimy hands. The black True Grit surface is also “faceted” meaning it scatters light in every direction which means it is non-reflective and will never get hot, even if left in the hot sun.

The Relentless™ Fillet Knife blade is made of relatively soft titanium which wears quickly like dentin. A strip of ultra-hard carbide or crushed diamond compound is bonded to the titanium base metal via spark and

Relentless™ Knives feature a 100% aerospace grade titanium blade. Titanium is extremely lightweight, which means less wrist fatigue while filleting, and extraordinarily strong. But, most important, titanium is extremely resistant to corrosion and degradation. In other words, a Relentless™ Knife will never rust. This is an ideal attribute for a fillet knife, especially for the saltwater angler.