Diamond circular saw blades can become dull, especially if you use them a lot. If you want to have a good, even cut, you need to expose the new diamonds to have a sharp blade. A dull blade can cause the saw to jump or kick back on you, causing injury to you or someone else. You can take the saw blade to a professional blade sharpener, or buy a new blade. Why not save the expense and sharpen your diamond circular saw blade on your own.
source : http://www.ehow.com/
- Place a brick or concrete building block on an old table. Make sure it is a table that you won't mind cutting into if you happen to slip with the saw.
- Hook up a water hose and turn the water on to a medium flow. Have a friend hold the water hose as you sharpen the blade. The water needs to run over the brick or concrete building block as the saw blade cuts through. The water mixes with the remnants of the brick and turns it into a paste-like slurry. This slurry is what sharpens the saw blade.
- Put on eye protection to protect your eyes and then plug in the saw. Turn on the power.
- Cut into the block or brick carefully. Make a cut that is about 2 inches deep. Stop the saw and unplug it.
- Check the blade for sharpness. If the blade is still dull, then repeat steps 2 through 4. The length of time it takes to sharpen your blade depends on how dull your blade is and the abrasiveness of the brick or concrete building block.