How to Fix a Glazed Diamond Blade

When your diamond blade starts sparking, slowing, or skipping, it’s likely glazed. That means the metal bond has sealed over the diamonds, stopping them from cutting. The good news? You can bring it back to life in minutes with the right gear and a steady hand.

What You’ll Need

Before you start, make sure you’ve got the essentials ready:

• Dressing stone (or a cinder block if you’re stuck on-site)

• Water or coolant system for wet saws

• Safety gear — goggles, gloves, and ear protection

• Your diamond blade, mounted and ready to go

Step 1: Check the Blade

Take a quick look first. If segments are cracked, missing, or worn down to the core, it’s time for a new one. But if the blade just looks shiny or glazed, a simple dressing will fix it.

Step 2: Set Up the Dressing Block

Place the dressing stone on a flat, stable surface — right in the saw’s cutting path. Keep it firm but not clamped too tight.
If you’re working dry, use light pressure. For wet saws, make sure your water flow is running steady before you begin.

Step 3: Dress the Blade

Now it’s time to bring those diamonds back.
Turn on your saw and gently lower the blade into the dressing stone. Make smooth passes forward and back — around three to ten cuts is plenty. Each pass exposes fresh diamond edges and clears out the metal glaze.

Pro tip: Don’t rush it. Let the blade do the work. Pushing too hard can glaze it again before you’re done.

Step 4: Check and Clean

Stop the saw and inspect the edge. You should see a rougher, sharper surface where the diamonds are exposed.
If it still feels slick or cuts slow, do a few more passes.
Once it’s cutting clean again, rinse and wipe the blade before storing it.

Step 5: Keep It Cutting Smooth

A little maintenance keeps your jobs running faster. Dress your diamond blades every few weeks — or whenever you notice slower cutting — to keep performance consistent.

If you’re cutting across different concretes or materials, swap blades to match the job. Using the right bond and segment saves time, effort, and money.