Decreased performance: If you notice that the drilling process has become slower or the holes are rougher than usual, it may indicate that the accessory is worn out and needs replacement.
Visible wear or damage: Inspect the accessory for any visible signs of wear, such as cracks, chips, or dull edges. These can compromise the efficiency and safety of the drilling operation.
Increased vibration or noise: Unusual sounds or movements during operation can be a sign that the accessory is no longer functioning properly and should be replaced to avoid potential hazards.