- Find a soft, abrasive material that you can make a few cuts into. A concrete block or a brick will work great.
- Get a hose and run water over the area of the block you will be cutting. It’s best to have someone hold the hose for you, or secure the hose in a way that doesn’t require you to hold it. Don’t try to hold the hose and cut at the same time.
- Make a few cuts into the block or brick while water is running over it. This will create an abrasive slurry that allows the dull diamonds and metal to be stripped away, exposing the new diamonds. You want to be sure you are cutting at least 2 inches into the block so it will wear down the blade enough.
- Stop your saw and check the blade after the first few cuts to see if there are exposed diamonds. It’s hard to estimate how long this process will take, since it depends on how dull your saw is, the exact material you’re cutting into, and the blade you are using.
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