Sharpening knives with a bench grinder provides a number of benefits. A bench grinder can help you quickly sharpen even the dullest and most blunt of knives. It’s an effective and time-saving alternative to other manual sharpening techniques such as using a whetstone or sharpening steel. Bench grinders are also durable and easy to use, allowing anyone to sharpen knife blades in just minutes! And since most bench grinders come with adjustable speeds and options for coarse or fine grinding, they’re capable of handling a variety of bladed tools such as pocket knives, kitchen knives, hunting knives and even axes. Plus, with the right attachments, you can even use your bench grinder for honing purposes which will help keep the blade nice and sharp for longer periods of time. Lastly, since most bench grinders are relatively inexpensive compared to other professional grade knife sharpening tools, they make a great investment for any cook or outdoorsman who values the performance of their blades.

Advantages of Sharpening Knives With a Bench Grinder and Tools Needed

Sharpening knives with a bench grinder is an effective and surprisingly simple way to hone blades quickly and easily. A bench grinder typically features two abrasive wheels that are mounted on either side of the motor, both of which can be used for sharpening. Here are some of the advantages of this approach:

• Fast – Sharpening a knife with a bench grinder takes significantly less time than trying to do it by hand, allowing you to get your task complete in minutes.

• Versatile – Bench grinders can sharpen all kinds of blades, from those found in kitchen knives to tools in your shed.

• Cheap – You don’t need specialized tools to take advantage of a bench grinder; all you need are two pieces of the same material (diamonds or aluminum oxide) and compatible grinding disks.

To use a bench grinder for sharpening knives, you’ll need safety goggles, gloves, and a few other basic materials: a flat plate or sanding disk; a pair of tongs; and some oil for lubricating the blade as it’s sharpened. It’s also recommended that you have some spare grinding disks at hand just in case one wears out during use. Finally, make sure to read the manufacturer’s instructions on how to correctly mount the grinding disk onto the bench grinder before starting the process.

Safety Precautions for Working With a Bench Grinder

When using a bench grinder to sharpen a knife, it is important to take a few safety precautions. Wear appropriate protection such as eye and ear protection, along with gloves, in order to protect yourself from flying debris. It is recommended that you use shields over the workpiece and grinding wheel to ensure any sparks are contained. Although not necessary when just sharpening a knife, it’s always advisable to use a dust collector or vacuum cleaner to keep your working area free of dust particles that could enter the atmosphere or build up in hard-to-reach areas. Before starting work on the bench grinder, inspect all machines components and accessories for wear or damage and remove them if they are present. Make sure that your blades are securely fastened in place before starting so they do not move around which can cause them to slip out of alignment with the grinding wheel. Additionally, you should always double check that the grinder is properly adjusted before beginning work. After completing each grinding session always allow the machine time to cool down before removing the blade, and make sure you store knives away from where they could cause injury again while they are sharpened using a bench grinder.

Preparing the Bench Grinder and Knife for Sharpening

Sharpening a knife with a bench grinder requires some safety precautions before beginning. You should always secure the grinder in place, as well as wear appropriate safety gear such as goggles and gloves. Make sure to keep other objects away from the grinding wheel while in operation.

Next, prepare your knife by securely holding it in one hand, using the other to set it in position on the grinder. Set the blade at approximately fifteen degrees against the grinding wheel and use small movements to run it up and down. Go back and forth across both sides of the blade evenly for an even sharpened edge.

Finally, stop grinding when you feel that you have achieved your desired sharpness level. Clean off any burrs created from the process with a piece of steel wool or fine grit sandpaper. Finally, make sure to carefully apply lubricant to prevent rust formation before storing your knife away safely!

Basic Steps for Sharpen a Knife With a Bench Grinder

1. Secure the knife in a vise, taking extra care not to damage the blade or handle. The handle can be protected with a cloth in order to avoid slipping while you’re working.

2. Start by using the coarse wheel of your bench grinder, pushing it forward and backward across the face of the wheel at a 10 degree angle. Apply gentle pressure and use short strokes when grinding each side of the knife’s blade.

3. Shift to the medium wheel or optional fine wheel for further sharpening as desired. You may also want to polish your blade with an honing compound or diamond paste after shaping it with the medium wheel for added sharpness and finish quality.
For finer edges, finish up by stropping your knife on leather or canvas belts if available.
4 .Turn off and unplug the grinder once finished and secure your knife away from where it might cause harm prior to stowing away or disposing of your bench grinder’s worn-out wheels appropriately.

Expert Tips for Achieving the Perfect Edge on Your Knife

Sharpening a knife with a bench grinder is not for the faint of heart, but it can be an effective way to maintain and restore the edge on your blades. Before you begin this potentially dangerous task, you should understand a few key techniques that will help you achieve perfect edges.

First, knives should be properly secured in a vise so as to minimize movement during sharpening. This should be done very carefully and keeping your hands away from the blade at all times is essential. Never grasp the blade with your fingers while sharpening, as this could be very dangerous. It’s paramount that the angle of grinding is consistent throughout, otherwise you’ll end up with an uneven edge on your knife. Make sure that the sharpening stone and bench grinder are both completely dry beforehand – adding water will reduce their abrasiveness and could make them slip more easily which could cause injury or damage to your knife.

It’s also critical to wear eye protection during this process, since sparks and debris can fly when grinding metal blades with a bench grinder. Finally, take extreme care when using coarser stones or wheels, as these are better for creating edging profiles for knives and can remove considerable quantities of material very quickly if misused. With patience and practice, you should easily be able to master this skill and reap the rewards of having perfectly sharpened knives!

Caring for Your Bench Grinder and Sharpened Knives

Sharpening a knife with a bench grinder can be a challenging task that requires a great deal of practice and patience. Before starting the sharpening process, you should make sure your bench grinder is in good working order and equipped with the required safety features. If you notice any rust, cracks, or other visible damage to the grinder or its blades, repair them before continuing.

Once your grinding wheel is in perfect condition and your knife is clean and ready to be sharpened, adjust the angle of the grinding wheel so it will provide the correct pressure to sharpen the blade. You may also want to wear safety goggles for additional protection. Slowly move your knife against the rotating wheel, taking care not to over-heat or cut too deeply into the blade – this could weaken it drastically. After one side has been ground evenly, repeat on the other side. Make sure to check both sides after you have finished for any signs of dullness or asymmetry

Once you are finished sharpening your knife using a bench grinder , use some light oil or wax to help protect its edge from moisture and humidity. This will prevent rusting and keep the blade looking longer-lasting than if it were left untreated. It is important that you always clean off any oil residue afterwards as leftover oil can clog up delicate pieces within your bench grinder when they come in contact with each other. Finally, thoroughly inspect each knife after sharpening it with a bench grinder — even if everything appears fine — before putting them away for storage. Doing this will ensure that your knives are always well maintained and safe for use at all times.



1. Using a bench grinder is a fast and easy way to sharpen a knife quickly, making it an ideal choice for those with limited time or skill.

2. Great for larger knives and blades, as the wide surface area makes sharpening even-edged and consistent shapes easier and more accurate.

3. Stays consistent consistently, meaning no worries about variable angles or hand fatigue when sharpening your knives.

1. Not suited to smaller knives due to the power of the motor, can potentially dull edges instead of sharpening them if not monitored properly.
2. Can be dangerous due to the spinning equipment and risk of contact with fingers and other body parts from distraction.
3. Can be noisy so may not be suitable for use in confined spaces such as apartments etc.