Shop Kershaw Sharpeners
Kershaw's care shelf in our warehouse holds exactly one item: Kershaw Knife Oil at $7.43, made in the USA and in stock in Woodlawn, Virginia. We would rather tell you that plainly than pad this page out.
One product does not make for much of a shopping decision, so this page is mostly about the job instead: what oil actually does for a folding knife, how to sharpen the steels Kershaw uses, and what else in the building pairs with a Kershaw when you want a full care kit.
Two jobs, and they are different from each other.
The pivot. A folder's action lives or dies on a clean, lightly lubricated pivot. Pocket lint, dust and old grease turn a smooth knife gritty, and most people conclude the knife is worn out when it simply needs cleaning. Flush the debris out, let it dry, put one drop of oil on the pivot, and work the blade through its travel a dozen times. The improvement is usually dramatic.
The blade. A thin film of oil on a stored blade keeps moisture off the steel. This matters most for the semi-stainless and carbon steels. Kershaw's D2 models are the obvious candidates, and so is any knife that has been near salt water.
What oil does not do is fix a dull edge or a loose lock. Those are sharpening and warranty conversations respectively.
The catalog runs five steels, and their appetite for maintenance varies a lot.
Most people sharpen too rarely and then too aggressively. The better habit is a light touch-up often.
Set a consistent angle and keep it. Consistency matters more than the exact number, and a knife sharpened badly at one angle beats a knife sharpened well at five different ones. Use light pressure and let the abrasive cut rather than forcing it.
Work until you can feel a burr along the full length of the edge on one side, then repeat on the other, then alternate light passes to remove it. Finish by stropping on cardboard or leather if you have it.
For Kershaw's soft stainless, almost any stone or pull-through will do. For D2 and MagnaCut, use diamond or ceramic. Kershaw's FAQ says you can also successfully sharpen a Kershaw knife on a whetstone or other specialty sharpeners.
Because Kershaw's own care range stops at oil, the rest of a kit comes from elsewhere in the building. Our sharpeners category holds every option, and Buck's sharpening range is the deepest single-brand set we carry, with six items including the EdgeTek Ultra Steel and a Soft Arkansas Stone.
A sensible kit is a stone or rod for setting the edge, something ceramic for touch-ups, a cloth, and a bottle of oil. That covers everything short of a chipped blade, which needs coarse work you are usually better off sending out.
If you only buy two things, buy a rod and the oil. A ceramic or steel rod handles the weekly reality of a knife that is slightly less sharp than it was, takes ten seconds to use, and needs no skill to get right. Full stone work is for when a knife has genuinely gone dull, which for most people is a few times a year rather than a few times a month. Buying an expensive stone first and never developing the habit is the most common mistake in knife care.
Sharpening fixes a dull edge. It does not fix three other things, and knowing the difference saves people a lot of wasted evenings.
A chip. A visible notch in the edge has to be ground out, which means removing metal along the whole length of the blade to meet the bottom of the chip. That is coarse work, it changes the blade's profile, and unless you have the equipment and the patience it is better sent to someone who does.
A bent tip. Common on thin-tipped folders like the Leek. Sometimes it can be gently straightened, often it snaps. If a tip has already broken, reprofiling into a shorter, blunter point is usually more honest than trying to rebuild the original shape.
Play in the lock. Side-to-side blade movement or a lock that engages inconsistently is a mechanical issue, not an edge issue. On a knife bought new, that is the situation Kershaw's warranty exists for.
The general rule: if the problem is the edge, sharpen it. If the problem is the shape of the steel or the way the knife is assembled, stop before you make it worse.
How a knife is stored does more damage than how it is used. Three habits matter.
Do not store a knife in a leather sheath long-term. Leather is tanned with compounds that attract moisture and it holds it against the steel. Sheaths are for carrying.
Put it away dry. Not wiped, dry. A blade that feels dry to the touch can still be damp in the pivot, which is where corrosion starts on a folder.
Keep it out of a hot vehicle in summer. Heat cycles push moisture in and out of handle materials and accelerate everything above.
Kershaw's warranty covers defects in materials and construction for the original owner, and specifically excludes rust and improper maintenance. That exclusion is not unusual in the industry, but it does mean that the ten seconds you spend drying a blade is genuinely the difference between a warranty question and a maintenance failure.