Undercutting takes place when you are cutting asphalt or abrasive materials with a diamond blade. This is where the centre plate of the diamond blade wears down faster, just beneath the segments, causing the metal to get very thin and with the potential to create segment detachment. This is caused by the fines and slurry produced from the product being cut. To avoid this happening, reputable manufacturers will add what is known as a deep, a drop, or a hammer segment, at several positions on the circumference of the blade. Top tip – check your blades for cutting asphalt do have this feature, to ensure safety and longevity of use.