HOW TO CHOOSE THE RIGHT METAL DRILL BIT – PART 3

What to Watch Out For – The Difference Between Apparent and True Drill Bit Quality

Metal drill bits are an essential tool in every workshop, and choosing the right type is not always straightforward.
It may be tempting to save money by choosing the cheapest option. In some cases, that can be perfectly sufficient, as explained in our article Metal Drill Bits – Basic Information.

But what if you decide to invest more money in what appears to be a higher-quality drill bit, only to discover that the results do not meet your expectations?

If you have already read our article How do the manufacturing process and the material used affect drill bit quality?, you now understand why two drill bits that look almost identical can differ significantly in both quality and price.

Our advice and recommendations will help you distinguish genuine quality from apparent quality and make you a well-informed buyer.

How can you avoid making the wrong choice?

• Don't judge the type or quality of a drill bit by its colour alone: It's true that colour is the most obvious distinguishing feature for most users. As a general rule, roll-forged drill bits are black, HSS-G ground drill bits are usually silver, and cobalt drill bits are golden brown. However, some manufacturers use marketing tricks to make inexpensive drill bits look like premium products. As a result, you may even come across silver-coloured drill bits that are actually roll-forged rather than ground. Always focus on the technical specifications and performance characteristics rather than appearance alone.
• Inspect the flutes: Check the quality of the spiral flutes. Smooth, even and precisely machined flutes are a hallmark of high-quality ground drill bits. If the flutes are rough or poorly defined, the drill bit is roll-forged.
• Inspect the drill point: Check whether the drill bit has a split point, which is essential for accurate and efficient drilling. Roll-forged drill bits usually do not have one. On ground drill bits, the presence of a split point is often what distinguishes premium products from lower-cost alternatives.
• Markings: Look for clear and legible markings not only on the packaging but also on the drill bit itself. Avoid drill bits with unclear or missing markings. Quality drill bits are typically marked with the material type and size on the shank. Avoid products that provide little or no technical information.
• Avoid unusually cheap drill bits: A very low price may seem attractive, but it often reflects reduced manufacturing costs rather than reduced profit margins. Manufacturers and retailers are generally unwilling to sacrifice their margins, so achieving a lower selling price often means using cheaper materials and simpler manufacturing processes. As a result, these drill bits become dull more quickly, break more easily, or fail during use. In the long run, investing in a higher-quality drill bit provides better performance and a longer service life.
• Read reviews and ratings: Before making a purchase, read reviews from other users. They can provide valuable real-world information about the quality and performance of a drill bit.
• Choose established brands: Well-known manufacturers generally maintain stricter quality control. Although their products are often more expensive, the higher price usually reflects superior quality and reliability.