Fresh water
Fresh water

Sharpening Fishing Knives: The Art of Honing an Edge

Estimated read time
Jeff Strang
You've picked up your first whetstone, watched 15 different sharpening videos, started sharpening the knife, and have dreams of finally showing that smug paper who's boss, except when you go to slice.

One of the most underrated yet crucial tools in any fisherman's kit is a sharp knife. A finely honed blade makes all the difference when it comes to preparing bait, filleting your catch, or performing any other cutting task at sea.

In this guide, we will explore the importance of sharp knives for fishermen, the different types of whetstones, and a step-by-step method of using a whetstone to sharpen your knives. Finally, we will discuss how to test the sharpness of your blade effectively.

The Importance of Sharp Knives for Fishermen

1. Efficiency: A sharp knife significantly improves your efficiency when preparing bait or filleting your catch. The cutting process becomes smoother, cleaner, quicker, and more precise.

2. Safety: Contrary to what you might think, a sharp knife is safer than a dull one. This is because a sharp knife requires less force to cut through materials, reducing the risk of it slipping and causing an injury.

3. Quality of Fillets: A sharper knife leads to cleaner, more aesthetically pleasing fillets, with less waste and damage to the fish's meat.

4. Time: In the hands of a proficient filleter, a sharp knife saves time – potentially as much as 50%

Choosing the Right Whetstone

Whetstones come in different types, varying in grit size and material composition. Grit size refers to the stone's coarseness. A lower number means a coarser stone, used for initial sharpening. A higher number indicates a finer stone, used for finishing and polishing the blade's edge.

1. Coarse Stones (Grit size 200-500):  These are perfect for repairing chipped or very dull knives.

2. Medium Stones (Grit size 800-1500): Ideal for regular knife sharpening, maintaining a nice edge on your knives. Many people will not need to go finer than this level of stone.

3. Fine Stones (Grit size 2000-3000): These are used for finishing and refining the edge of high-quality knives.

4. Extra-Fine Stones (Grit size 4000-8000): These stones are for polishing and razor-like sharpness.

Honing the Edge: Steps to Sharpening Your Knife

Follow these steps to sharpen your knife effectively:

1. Preparation: Soak your whetstone in water for about 5-10 minutes until bubbles stop forming. This helps provide lubrication for the sharpening process.

2. Finding the Angle: Hold the knife between 15° and 20° of angle against the stone. Maintaining a consistent angle is key to achieving a sharp edge. Typically, Japanese steel knives are best honed on a finer angle while American or European knives suited the wider angle.

3. Sharpening Process: With the edge of the knife facing away from you, start moving the blade across the stone in a sweeping motion, as though you're trying to slice a thin layer off the stone. Apply moderate pressure and ensure you sharpen the entire length of the blade.

4. Checking the Burr: After a few strokes, check for a 'burr', a thin lip of metal on the knife's opposite side that you're sharpening. This indicates that you have sharpened enough on one side.

5. Sharpen the Other Side: Once you have created a burr on one side, repeat the process on the other side of the knife.

6. Final Touch: Finally, use a finer grit stone to polish the edge of the knife, repeating the sharpening process.

Testing the Knife's Sharpness

After you've sharpened your knife, it's crucial to test its sharpness. Here are a couple of methods:

1. Paper Test: Hold a piece of paper and try slicing through it at an angle away from your hand. A sharp knife should easily and cleanly cut through the paper.

2. The tomato test: A sharp knife will easily slice a ripe tomato with little pressure. The tomato slices should show no compression or denting on the edge you first rested the blade.

Remember, maintaining the sharpness of your knives is an ongoing process, so regularly hone your knives. With the correct technique, tools, and a bit of practice, you will have a set of finely sharpened knives that will enhance your fishing experience and efficiency. Sharp tools lead to cleaner work, less waste, and a safer boating environment.

Survive the Dive
Survive the Dive

Free online dive training for all!

Have you played Survive the Dive? The free online diver training and certification platform is live today for all divers, spearfishermen and recreational skippers of diving boats.

Play quiz

Related Posts

Featured Posts

Drop NZ Fishing World a line!

When we get home and clean the boat we'll get back to you.

Thank you! Your submission has been received!
Oops! Something went wrong while submitting the form.