Comprehensive Review: Drill America 3/16" x 6" Cobalt Aircraft Extension Drill Bit, GLBCO Series

When it comes to drilling through tough materials, not all drill bits are created equal. I recently had the opportunity to put the Drill America 3/16" x 6" Cobalt Aircraft Extension Drill Bit from the GLBCO Series to the test, and I must say, the experience has been nothing short of impressive. This review is a deep dive into my experience with this drill bit, covering its features, performance, and overall value.

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About Drill America

Before we get into the specifics of the drill bit, let's talk a bit about the manufacturer. Drill America has been in the tool business since 1923, specializing in supplying a full range of industrial and contractor cutting tools. Their products, which include drills, taps and dies, reamers, end mills, and carbide burs, are distributed across the United States and the world. Knowing the company's long history and specialized focus adds a layer of trust in the quality and reliability of their products.

First Impressions

Upon receiving the Drill America Cobalt Aircraft Extension Drill Bit, my first impression was its robust and high-quality appearance. The gold oxide finish not only gives it a sleek look but also indicates its cobalt steel construction, which is known for its durability and resistance to high temperatures. The round shank design promised compatibility with a wide variety of tool holding systems, making it a versatile addition to my toolbox.

Features and Specifications

• Material: Cobalt
• Cutting Diameter: 0.19 Inches
• Finish Type: Gold Oxide
• Shank Type: Round
• Cutting Angle: 135 Degrees

The specifications indicate that this drill bit is designed for precision and durability. The cobalt material is effective in drilling through tough, high tensile strength materials like stainless steel, inconel, and titanium. The 135° split point tip is a feature I was particularly excited about, as it prevents the drill from walking, a common issue with lesser quality bits.

Performance

My first project with the Drill America drill bit was to drill through some stainless steel plates. I was immediately impressed by how easily the bit cut through the material. The 135° split point tip worked as advertised, preventing any walking and allowing for a clean, precise start. The 6" length was perfect for my needs, providing just the right amount of reach without compromising stability or control.

Over several projects, I've used this drill bit on a variety of materials including inconel and titanium. Each time, the performance has been consistent, with smooth, efficient drilling and no noticeable wear on the bit. The gold oxide finish not only identifies this bit as a cobalt steel tool but also seems to contribute to its longevity and performance.

Pros and Cons

Pros:

• High-quality cobalt construction suitable for tough materials
• 135° split point tip for precision drilling
• Gold oxide finish for durability and performance
• 6" length for extra reach
• Round shank for wide tool compatibility

Cons:

• Priced higher than some alternatives (but justified by performance and quality)

Conclusion

After extensive testing, I can confidently say that the Drill America 3/16" x 6" Cobalt Aircraft Extension Drill Bit is a top-notch tool that lives up to its promises. Whether you're a professional contractor or a DIY enthusiast, this drill bit offers the durability, precision, and performance needed to tackle the toughest drilling tasks. While it may come at a premium price, the quality and reliability it offers make it a worthwhile investment for anyone serious about their tools. Drill America has truly crafted a gem with this one, and I couldn't recommend it enough.

If you're in the market for a reliable, high-performance drill bit capable of handling the most demanding materials, look no further than the Drill America Cobalt Aircraft Extension Drill Bit. It's not just a tool; it's a game-changer in your drilling projects.

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