Milwaukee 9/64" Thunderbolt Black Oxide Drill Bit (12 PK)

As someone who has spent countless hours in the workshop, I’ve come to appreciate the value of a reliable set of drill bits. Recently, I had the opportunity to test out the Milwaukee 9/64" Thunderbolt Black Oxide Drill Bit set, and I must say, it left a lasting impression on me. This set, with its jobber length design, is built for durability and longevity, and it certainly lives up to those claims.

First off, the construction quality of these bits is evident right out of the box. The thicker core provides a noticeable heft and strength, which is reassuring when tackling tougher materials. I’ve had my fair share of drill bits snapping under pressure, but the Milwaukee Thunderbolt bits seem designed to avoid this common frustration. The thicker web design definitely contributes to their robustness and longevity.

One of the standout features of these bits is the 135° split point tip. This design allows for a precision start and significantly reduces the tendency for the bit to wander or "walk" across the material. This is especially useful when drilling into metal surfaces, where accuracy is paramount. I found that the bits consistently started exactly where I intended, which saved me a lot of time and effort in the long run.

The black oxide coating is another noteworthy aspect. It not only adds a sleek, professional look to the bits but also provides excellent corrosion resistance. While I haven’t subjected these bits to particularly harsh conditions, it’s comforting to know that they are less likely to rust over time. This coating also helps in keeping the bits cooler during use, which can extend their lifespan.

In terms of performance, the Milwaukee Thunderbolt bits excel across a range of materials. I tested them on metal, wood, and PVC, and they handled each material with ease. When drilling through metal, I did notice that applying a bit of cutting oil and using a slower speed resulted in smoother and more efficient drilling. The bits produced clean, precise holes without much effort. When it came to wood and PVC, the bits cut through like butter, making quick work of my tasks.

One minor issue I encountered was with the smaller diameter bits. While the larger bits performed flawlessly, the smaller ones did seem more prone to breaking under heavy use. This is not entirely unexpected, as smaller bits generally have less structural integrity, but it’s something to keep in mind if you frequently work with finer diameters.

The flute design of the Thunderbolt bits deserves special mention. The specially designed flute form effectively clears chips and debris, which not only maintains a cooler bit but also improves drilling efficiency. I noticed significantly less clogging and overheating, even during extended use. This is a crucial feature, especially when working on larger projects where maintaining a steady pace is essential.

The set comes in a sturdy, well-organized case, which is a nice touch. The case is compact and easy to store, with each bit securely held in place. The slide latch mechanism is convenient and ensures that the case stays closed during transport. However, I did find that the smaller bits were a bit tricky to remove from the case initially, but they did loosen up with repeated use.

Overall, the Milwaukee 9/64" Thunderbolt Black Oxide Drill Bit set is a solid investment for any DIY enthusiast or professional. The combination of durability, precision, and versatility makes it a valuable addition to any toolbox. While there are a few minor drawbacks, such as the fragility of the smaller bits and the initial tightness in the case, these are outweighed by the numerous benefits.

I would definitely recommend this drill bit set, particularly to those who need a reliable, all-purpose set that can handle a variety of materials. The thicker core and black oxide coating ensure longevity, while the 135° split point tip and efficient flute design enhance performance. Whether you’re drilling through metal, wood, or PVC, these bits are up to the task. For the price, you’re getting a high-quality product that will serve you well for years to come.