Why Core Bit (Drill Bit) and Wood Blade (Carbide) sharpen regularly?

Core bit and carbide wood blade should be sharpened regularly to ensure the consistency in cutting results. Yes, indeed – very important to check it’s status since often used of these blades and bits may result to ineffective cutting and drilling as well as risking the users safety measures if some failure may occur.

Sharpening wood blades and drill bits is a comparatively easy task. It saves you bucks, as you don’t need to purchase new or pay someone to sharpen the carbide wood blades and core drill bits for you.(see more of how to use wood blade in concrete saw)


In order to sharpen your wood blades or core bits, all you need is water, a brick or a concrete bricks, and of course, safety equipment.

1 - Set-up the water you will be using by hooking a hook on the faucet and applying a midrange level of water pressure. Aim the water on the brick or concrete block and have it continuously run on the surface you will cut the diamond blade into.

2 - Carefully turn the saw on and start cutting into the brick or concrete block. The water helps sharpens wood blades because it mixes with the vestiges produced by the saw. The resulting paste-like slurry is abrasive enough to sharpen the wood blade. Continuously doing so will wear the carbide wood blade down, thereby exposing new diamonds.

3 - 2-3 inches of cutting into the brick or block concrete is enough. Use eye protection and wear goggles to ensure safety while sharpening the diamond blades for your saw.

Core Bit should be sharpen accordingly specially if it's a diamond core bit...

4. Repeat until you’ve reached the desired sharpness of the wood blade. It normally depends on the dullness of the blade and the abrasiveness of the brick or block concrete. The amount of water used and the blade hardness are also factors on how long the process takes.

There you have it. It’s just that easy right? Now after sharpening wood blade, let’s talk about the core bits. Here are a few tips for sharpening core bits:

1 - Prevention is always better than cure so to maintain the sharpness of your core bits, make it a habit to return them safely to their case instead of just tossing them into your toolbox. The tips are then protected from breaking while the edges from dulling.

2 - Using a fine metal file, file drill bits at a repetitive angled pressure at the tip of the drill bit. You can easily test the sharpness by using the tip of your finger. Keep repeating until you have reached the desired sharpness.

3 - Have an electric bench grinder hold the drill bit firmly in its core using low speed. Apply light pressure and rotate the core bits to all sides until it is sharpened. Don’t forget to cool the core bits repeatedly.

4 - Insert the core bit then into a vise and continue filing the ridges using a metal file.

When handling any construction equipment, always wear safety products. These include goggles, hard hats, gas masks, and gloves. Not only will the job get done faster, but you are also ensuring your safety and the safety of the people around you.