Sharpen saw blade

Sharpen saw blade: sharpening

Sawblades - differences
  • CV-saw blades
  • HM-saw blades
  • NF-saw blades
  • number of teeth
  • Limb or wide teeth
  • Shape of the teeth

If the saw becomes noticeably slower and the cuts become more and more messy, then you should sharpen or replace your saw blade. Also a loud sawing noise, ever finer sawdust, smoke and discoloration of the wood or stronger vibrations during sawing are signs of a blurred saw blade.

In any case, you should not continue sawing with a blunt saw blade. On the one hand, you no longer get clean saw cuts, on the other hand there is the danger that an imbalance will arise and the saw blade breaks and causes damage.

When sawing - as sharpening the saw blade - protective clothing and goggles are always recommended.

Sharpening saw blades - costs?

Sharpen saw blade: sharpener

Here is the soldered carbide part good to see.

Although all saw blades can be sharpened, the carbide saw blades, which include the nails (HM and NF), require a saw blade sharpener or sharpening. If you are looking for a circular saw sharpening near a supplier, then ask for a Werkzeugschleiferei or in the hardware store. But inquire before ordering for the prices. It is quite possible that the costs are higher than those for a new saw blade. Often prices per tooth are offered. Alternatively, you can ask the circular saw sharpening online, but note the shipping costs when comparing prices.

Tip: Weigh how often and why you use your saw. For example, if you want to saw lumber, a nail-resistant carbide saw blade is recommended. Who saws hard and / or composite wood, is better equipped with a carbide saw blade (hard metal) than with a CV saw blade (chrome vanadium). Also for firewood is usually worth a carbide saw blade, as it has a long life. CV saw blades are cheaper and easier to sharpen, but also dull faster.

How to sharpen a circular saw blade?

  • sharpener
  • Saw files (diamond files)
  • Pliers or
  • setting machine

There are two options: Either you buy a sharpener for this purpose or you can do it manually by dressing, filing and possibly restricting. The purchase of a sharpener will pay for itself quickly if you saw regularly.

If you use a sharpening device, follow the instructions for use, the steps are the same as manual grinding, but the result is much more precise when sharpening the machine.

By the way: The more you sharpen your saw blade, the longer it holds and the easier it is to sharpen. For manual sharpening, follow the instructions below.

Sharpen saw blade: blade

On a construction site, everything is cut with the same saw blade.

Sharpen saw blade: sharpener

Take a look at your file inventory and see if saw files are available.

What should you look for when purchasing a saw blade sharpener?

  • The diameter of your saw blades must be suitable (very large saw blades sometimes do not fit in the standard equipment).
  • The sharpener should also provide a shredding function if you use CV saw blades, as these are always always restricted.
  • Would you also like to grind HM and NF saw blades? Some of the equipment can be used with corresponding diamond grinding wheels for carbide saw blades.
  • The carbide saw blades have flat, wide teeth and alternating wide teeth. Check if the sharpener can sharpen your saw blades.
  • Pay attention to good quality, so that the device also keeps long term.

Sharpen CV saw blade - instructions

Learn more?

Wood works (basic knowledge)

Electric saws and cutters


To grind a saw blade without soldered carbide, proceed as follows:

  1. Remove the saw blade
  2. Check for broken teeth (replace saw blade in this case)
  3. Clamping in the workbench, the vise or by means of clamps
  4. Dressing, d. H. by horizontal filing with a flat diamond file bring all teeth to the same length. Until a small area has formed on the top of each tooth.
  5. Shape each tooth back to its original shape using 3 to 4 puffs with a triangular file. The tooth base should be in line with the entire tool. With the triangular file the shape is re-filed between the teeth to a point, as in the original condition. Keep the angle.
  6. With the pliers or the cupping unit, the teeth are bent evenly to the left and right, so that the saw blade does not jam when sawing. This is not necessary every time.
  7. Sharpen the individual teeth with a matching, isosceles, triangular sawing file in a few strokes by placing it horizontally between the individual teeth and sharpening with a few strokes
Warning: A non-uniformly processed saw blade can quickly become a hazard if it leads to an imbalance and as a result to a tool breakage. Therefore, take great care and weigh well whether a replacement, a precision working sharpener, or commissioning for sharpening would not be preferable to safety.

Frequently Asked Questions (FAQ)

Circular saw blade sharpen with Flex? Circular saw sharpen with Dremel?Absolutely not recommended. Grinds off the setting and / or is non-uniform in angle.
Circular saw sharpen with file? Sharpen circular saw instructions?This is described in the instructions above.
Circular saw sharpen price?The costs are very different. You can find more about this under the point "Sharpen saw blade - costs".
Circular saw blade sharpen angle?The original angles should be retained. With an angle gauge, the accuracy can be checked.

Author: Christiane Baldwin - Online Editor and Handyman

Photo Credits:
  • Cover Picture: Pixabay / Miryam's Photos
  • Carbide saw blade: Pixabay / Grisbonn1974
  • Sawing plastic: Pixabay / Jackmac34
  • Hand files: Pixabay, pink
  • Post picture: Pixabay / Pezibear

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Video Board: Saw Blades & Router Bits Sharpening Jig