The lubricant required depends on your honing application:
wd-40 works. Really, any light oil will do the job. 3-in-1, olive oil, even CLEAN motor oil.
Yes, you should always use a lubricant when honing a cylinder. Honing dry will clog (load up) the abrasive stones, generate excessive heat, and damage or scratch the cylinder walls.
For honing and sharpening, the best lubricant is standard, unscented mineral oil (like the kind found in pharmacies as a laxative) or commercial honing solutions. You can also use household alternatives like baby oil, sewing machine oil, or WD-40, though dedicated solutions are best for preventing clogged stones.
Yes, you can use 3-in-1 oil as a honing oil for sharpening stones. It is a light lubricating oil that successfully lifts metal filings (swarf) and floats them away from the stone's pores.
WD-40 is a solvent and cleaner designed to displace water, loosen stuck parts, and clean grime. 3-in-1 is a lubricating oil blended to reduce friction, protect against rust, and quiet squeaks on moving parts. Use WD-40 to break things loose; use 3-in-1 oil to keep them working.
You can use WD-40 on a sharpening stone, but it is best reserved as a cleaning agent rather than your primary sharpening lubricant.
Honing oil is necessary only if you are using a traditional oil stone. Its primary job is to lubricate the metal and float away "swarf" (tiny metal shavings) so the stone's pores do not get clogged and lose their cutting ability.
Gun oil. Lubricating fluids for hunting and sporting weapons are of synthetic origin and are partially suitable as a honing oil. They protect the metal well from corrosion, which is important for knives with a blade made of low-quality steel.
Honing oil is typically made from lightweight mineral oil, which is sometimes blended with thin petroleum solvents like kerosene or mineral spirits to adjust the thickness. Premium brands are often just plain mineral oil sold at a markup, and can contain additives like sulfur, chlorine, or oleic acid.
Yes, you can replace piston rings without honing, but it is highly discouraged because the new rings likely won’t seat, causing oil consumption and poor compression. While it might work temporarily if the original cross-hatching is still perfectly visible and the cylinder is not worn or "egged," you risk losing the seal.
You need to lubricate and cool the blade when sharpening it, honing oil works well. So does water. In fact, water stones and water sharpening are quite popular with woodworkers. Especially the ones that use hand tools a lot.
For a quick and effective gun oil substitute, synthetic automotive motor oil (e.g., 5W-30 or 10W-30) or Automatic Transmission Fluid (ATF) are excellent choices. They are engineered to handle high heat, resist breakdown, and lubricate moving metal parts.
WD-40 is not a true long-term lubricant. While the original Multi-Use product contains lubricating oils, it is primarily designed as a solvent, rust-preventative, and water-displacing spray. It is excellent for freeing stuck parts and cleaning grime, but evaporates quickly and can attract dust.
For a cheap and highly effective homemade penetrating oil, mix equal parts acetone (a powerful solvent) and automatic transmission fluid (ATF). This DIY mix outperforms many commercial sprays at a fraction of the cost. For off-the-shelf alternatives, Liquid Wrench or Kroil are top-performing commercial choices.
Norton honing oil is a little thinner. Those have been mixed 50/50 and works fine. The regular mineral oil works well, but its high viscosity seems to lubricate better and slows the cutting action.
The best, most accessible honing oil substitute is standard mineral oil (including unscented baby oil), as it won't gum up or go rancid. Other readily available alternatives include 3-in-1 oil, sewing machine oil, or standard kerosene.
Yes, you can use 3-in-1 oil as a honing oil for sharpening stones. It is a light lubricating oil that successfully lifts metal filings (swarf) and floats them away from the stone's pores.
DIY honing oil is incredibly easy and cheap to make at home. The two most effective, time-tested recipes use household items: The 50/50 Mix (equal parts mineral oil and kerosene) or Straight Mineral Oil. Both suspend metal shavings perfectly while you sharpen.
The best honing oil depends on your sharpening needs, but generally, pure, light mineral oil is the top choice for knife and tool sharpening. It prevents metal filings (swarf) from clogging the stone's pores without gumming up the surface.
As a general rule, hone your knife regularly—ideally before or after each cooking session. This keeps the edge aligned. Sharpening, which removes material to restore the edge, is needed far less often—only when honing no longer helps.
Use dedicated honing oil or a lightweight, penetrating fluid like WD-40. Alternatively, a 50/50 mix of lightweight mineral oil and kerosene or standard 10W-30 engine oil works perfectly. The fluid acts as a lubricant and flushes away metal shavings to prevent the abrasive stones from clogging.
Your stone will require lubrication to function well. In the sharpening phase, we do not recommend any current WD-40® Brand Products although some may be used later for storage & protection. For sharpening stones the lubrication can come from water or oil.
Yes, you can use olive oil on an oil sharpening stone, but it is not recommended for long-term use. It is highly viscous, meaning it can create a thick mess and may eventually clog or "gunk up" the abrasive pores of your stone.
Cutting boards made of glass, granite, ceramic, or your dinner plate may look stylish or convenient, but they are the fastest way to destroy a knife's edge. These surfaces are harder than your knife's steel. So every time your blade contacts them, it suffers microscopic edge deformation, chipping, or even rolling.