Sharpen a slash hammer


If the splitting ax or the splitting hammer is used intensively, it is not enough for the blade to become dull. Below we show you ways how to sharpen your slitting hammer again.

Universal text, splitting hammer and splitting ax

First of all, we point out that the sharpening of a splitting ax or a splitting hammer is identical. Where exactly are the differences between splitting hammer and splitting ax, you can read here in detail. For grinding and sharpening of the split hammer, you have several options:

  • grind with a fine file and different grindstones
  • Grind on the angle grinder with a sanding or lubrication disc
  • sand with sandpaper and possibly grindstone

Sharpening the slitting hammer with file and grindstones

The file for sharpening the splitting ax or the split hammers is necessary if notches were accidentally hit in the blade. This can happen, for example, if the blade was accidentally hit on a stone. The file is sanded away from the material, ie from the hammer or ax head to the blade.

It is important to ensure that the blade bow is filed clean. Then the blade is removed with grindstones. First, it should be a grindstone between 200 and 400, as the finest grain size is a maximum of 800 for the second grindstone for the finish sufficient. Also, the whetstone is always pulled from the ax head to the blade and slightly offset along the blade.

Sharpen split hammers with an angle grinder

Another possibility is grinding or stripping with a grinding wheel on the angle grinder. This should have a grain size of 200 to 240. However, the use of an angle grinder (a Flex) is only advisable if you have appropriate experience. The problem: if you hold the grinding wheel too high at high speeds and / or too tight pressure on the blade, it may anneal.

If the blade is already blue, it is already too late. Heating works like sintering steel. This one gets hard and brittle. This will make the ax or the splitting hammer faster and more blunt after just a few strokes than usual. The angle grinder is really only to be recommended if you have the corresponding experience on knife blades.

Grinding the split hammers with sandpaper and / or grindstones

Grinding with sandpaper and grindstones follows the principle of grinding with a grindstone and a file. If there are no rough notches in the hammer blade you can sharpen them. They begin with a grain size of 120. Then in gradations more sandpaper grains or grindstones follow. Also, make sure that the whetstones are soaked in water and that enough water is used during grinding.

Grinding machines for the slitting hammer advisable?

Grinders are often problematic as many home improvement or consumer households tend to buy cheap products. Thus, the sharpening and grinding of a splitting ax or a split hammer will never really be successful.

Tips & Tricks

After the splitting ax or the splitting hammer has sharpened again, you should lubricate the blade well with creeping oil after drying. This prevents corrosion (with a corresponding alloy) and the ax or the splitting hammer slides better into the wood.

Tips & Tricks

There are "guidebooks" in which it is written that sharpening an ax is not so important because the force would be created by the impact and the wood would be split by it. That's wrong. A sharp blade penetrates much easier in wood.


Video Board: How To Sharpen Your Splitting Maul / Axe Maul