Top Tips for Drilling Through Metal: Selecting the Best Bits

Drilling through metal can be a challenging task, especially without the right tools. Whether you’re working on site, in a workshop, or tackling a DIY job at home, choosing the correct metal drill bit makes all the difference to the quality and efficiency of your work.

  1. Use the Right Drill Bit for the Metal Type

Different metals vary in hardness and density, so it’s important to match the bit to the material: 

  • Cobalt Drill Bits – Ideal for tougher materials like stainless steel and hardened metals. They offer superior heat resistance and longer life. 
  • Blacksmith Drill Bits – Perfect for large diameter holes in steel. These have a reduced shank and are suitable for hand drills. 

Each bit type is designed for specific conditions, so understanding your material is the first step in avoiding broken bits or damaged surfaces. 

  1. Start with a Pilot Hole

If you’re drilling a large hole or working with hard metal, it’s best to start with a smaller pilot hole. This helps guide the larger bit and reduces the stress on both the bit and the material, leading to cleaner, more accurate results. 

  1. Slow and Steady Wins the Cut

When drilling into metal, speed is not your friend. Use a lower drill speed, especially with harder metals, and apply consistent pressure. High speeds can overheat the bit and dull the cutting edge quickly. 

Cobalt and HSS bits are designed to withstand heat, but cutting too fast can still reduce their lifespan. 

  1. Use Cutting Lubricant

Using cutting oils and lubricants helps reduce friction, keeps the drill bit cooler, and extends its life. It also helps achieve a cleaner cut. This is particularly important when drilling stainless steel or other dense materials. 

  1. Maintain Your Bits and Replace When Needed

Even high-quality drill bits wear down over time. Keep them sharp and replace them when they start producing more heat or leave rough edges. Store them properly to avoid damage between uses. 

 

Shop Quality Metal Drill Bits at Speedy Fixings 

Whether you’re cutting through sheet metal, drilling structural steel, or need precision on stainless work, we’ve got the right bit for the job. Explore our full range of metal drill bits, including blacksmith, cobalt, HSS, and reduced shank options. 

Need advice? Contact our team for expert guidance on the best bit for your material and task.