Buying Core Bits like a Pro

About the Segment

Buying a core bit isn’t just about size or brand. Instead, it’s about the segment — the part doing the real work. The wrong segment can easily double your time, while the right one cuts clean and fast, like butter through concrete. Therefore, understanding how each part works together can save you time and money.

1. Start with Your Material

To begin, always start with your material. That’s your foundation. Whether you’re working with precast, exposed aggregate, or medium to hard concrete, you should always match your bond to the surface you’re cutting. In most cases, a softer bond cuts through harder concrete faster, while a harder bond lasts longer on abrasive or softer materials. As a result, knowing your surface type helps you make the most efficient choice every time.

2. Look at the Segment Design, Not Just the Color

Next, pay attention to the design. After all, shape matters just as much as material. The Shark Tooth Core Bit has a serrated edge that bites in quickly, keeping your cut straight and controlled. Consequently, it’s ideal for medium to hard concrete, precast slabs, and exposed aggregate work. Furthermore, understanding how segment shapes affect cutting speed helps you choose smarter.

3. Don’t Overthink the Barrel

When it comes to the barrel, keep things simple. Length and thickness are the easy part; however, the segment determines your speed, lifespan, and finish. In other words, the barrel simply follows the lead. By focusing on the segment first, you’ll naturally achieve a cleaner and faster cut.

4. Get Your Setup Right

Before drilling, it’s equally important to check your setup. Most core drills use a 1¼” UNC thread. If you’re running a Hilti, you’ll need a BI+ to 1¼” UNC adapter for compatibility. Additionally, check out the full Core Bit Accessories lineup to ensure everything fits exactly as it should. Proper setup not only improves performance but also prevents costly wear and damage.

5. Invest in Quality and the Right Range

Finally, remember that not all core bits are created equal. Performance can vary greatly depending on quality and how you use them. Because of this, investing in durable, well-designed bits is key if you’re drilling through a range of concrete types. Moreover, choosing the correct bond and design can improve both cutting speed and lifespan, which ultimately saves money in the long run.

Depending on your mix of projects, it’s wise to keep a few options on hand. For example:

• The WCB Pro Core Bit delivers top performance in hard to extremely hard concrete with heavy steel, offering long life and consistent cutting speed.

• Meanwhile, the GCBBK Pro Core Bit performs best in medium to hard concrete with medium steel, providing a smooth, efficient cut and balanced durability.

Pro tip: Soft bond for hard concrete, hard bond for soft concrete.

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