If you are using a diamond blade, you can tell if it is dull by looking for signs of wear and tear. If the blade is dull, it will have a dull, grayish appearance and may have chips or cracks in the diamond segments. Additionally, if the blade is dull, it will take longer to cut through materials and may produce a rough, uneven cut. You may also notice that the blade is producing more dust and debris than usual. If you are using a wet saw, you may also notice that the blade is not producing a clean, smooth cut. If you suspect that your diamond blade is dull, it is best to replace it with a new one to ensure that you are getting the best results.
