Milwaukee Cobalt Red Helix Drill Bit

I've had the chance to put the Milwaukee Cobalt Red Helix Drill Bit set, specifically model number 48-89-2508, through its paces over the past few weeks. As someone who often works with various types of metal in my projects, I was eager to see how these drill bits would perform, especially given the brand's strong reputation for durable and high-quality tools.

To start, the bits come in a compact and sturdy case, which is a nice touch. Milwaukee has engineered the case to keep the bits organized and secure, preventing them from falling out or getting misplaced. However, I did find the labeling inside the case to be somewhat confusing. The layout could be more intuitive, as the bit sizes are not always easy to identify at a glance, especially when the case is fully opened. If you're not already familiar with identifying bit sizes by sight, this could slow you down a bit during your projects.

One of the standout features of these drill bits is their 135° split point tip, designed to help with accurate starting and to prevent the bit from walking. In practice, this feature performed admirably. I found that the bits consistently started cleanly and stayed on target, even when drilling into hard metals like stainless steel and galvanized steel. This is a significant advantage, as it reduces the need for center punching and helps ensure precision in your work.

The cobalt material used in these bits is another key feature, intended to provide durability and long life, especially in hard metal applications. In my experience, these bits did indeed hold up well under heavy use. I drilled through a variety of materials, including soft metals, hard metals, and even some wood, and the bits maintained their sharpness and effectiveness throughout. The variable helix design also seemed to improve chip removal and limit heat buildup, which is crucial for maintaining the integrity of both the bit and the material being drilled.

However, it's not all smooth sailing. I did encounter some issues when drilling into particularly tough materials. For instance, while the bits performed well on softer metals and wood, they struggled a bit with harder metals. In some cases, I had to use a drill press and cutting oil to achieve satisfactory results. This isn't necessarily a deal-breaker, but it's something to be aware of if you plan to use these bits for heavy-duty metalworking.

One of the most frustrating aspects I encountered was the difficulty in resharpening the bits. The factory point is quite specialized, and once the bits start to dull, it can be challenging to restore them to their original sharpness. This could potentially shorten the lifespan of the bits if you're not equipped to resharpen them properly.

On the plus side, the secure-grip shanks are a fantastic feature. They have flattened areas that prevent the bits from slipping in the chuck, which is a common issue with other drill bits. This feature was particularly useful when using both my drill press and cordless drill, as it ensured a secure hold and consistent performance.

In terms of value, these bits are on the pricier side, which is to be expected given their cobalt composition. While they are certainly an investment, I believe they offer good value for the money, provided you use them correctly and maintain them well. For those who work frequently with hard metals, the durability and performance of these bits can justify the higher price point.

In conclusion, the Milwaukee Cobalt Red Helix Drill Bit set is a solid choice for anyone who needs reliable and durable drill bits for a variety of applications. They excel in precision drilling and are particularly effective for softer metals and wood. However, they do have some limitations when it comes to drilling into very hard metals, and the difficulty in resharpening them is a drawback.

Would I recommend these drill bits? Yes, with some caveats. If you're looking for a versatile set that can handle a range of materials and you don't mind the occasional need for a drill press and cutting oil for tougher jobs, these bits are a great choice. They offer excellent precision, durability, and a well-designed case for organization. However, if your primary need is for drilling into extremely hard metals, you might want to consider other options or be prepared to invest in additional equipment to maximize their performance. Overall, the Milwaukee Cobalt Red Helix Drill Bit set is a worthy addition to any toolbox, especially for those who value precision and durability in their tools.