What is an important factor to consider when drilling metal?

Using a lubricating oil when drilling metal is crucial because it serves multiple important functions. Lubricating oil reduces friction between the drill bit and the metal surface, which helps to keep the drill bit cool and minimizes the risk of overheating. Overheating can lead to bit wear or even damage, potentially rendering it unusable. Additionally, applying lubricant helps to improve the ease of cutting through the material, making the drilling process smoother and more efficient. It can also reduce the likelihood of metal shavings adhering to the drill bit, which can further complicate the drilling process. Overall, using lubricating oil enhances the longevity of the drill bit and contributes to a cleaner and more accurate drilling operation.