![]() The set features a straight shank design, compatible with most drills, and the bits come in various sizes, ranging from 1/16 inch up to 1/2 inch, ensuring versatility for different drilling needs. The bits are coated with Titanium Nitride, a finish that significantly enhances hardness and longevity, allowing for smooth, efficient cutting even through tough materials. The DEWALT DW1354 14-Piece Drill Bit Set is an optimal choice for drilling metal and hardened steel. DEWALT DW1354 – Best 14PC SET for Hardened Steel We have included various drill bits that we are confident will be a drill through even the hardest metal: 1. Some bits are designed to handle heat or work with certain coolants.Īlways use the correct drill speed and pressure to prevent overheating or breakage. Coolant: Use a coolant or cutting fluid to reduce heat and prolong bit life.Manufacturer: Research and read reviews to find reliable brands.Shank Design: A straight shank works for hand drills, while a tapered shank may be better for drill presses.You might need to test different sizes initially. Size: Ensure the drill bit size matches your needs. ![]() Bit Design: A 135-degree split point design reduces the force needed to drill and prevents ‘wandering’ at the start.Coating: Coatings like Titanium Nitride (TiN), Titanium Carbon Nitride (TiCN), Titanium Aluminum Nitride (TiAlN), or diamond enhances hardness, reduce friction, and increase bit lifespan. ![]() Diamond is typically overkill for most steels. Carbide is even harder but can chip easily. Cobalt is more durable and heat-resistant.
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