Buying Core Bits Like a Pro
About the Segment
Buying a core bit isn’t just about the size or brand — it’s about the segment. That’s 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 make every cut faster and more cost-effective.
1. Start with your material
To begin, always think about your material — that’s your foundation. Whether it’s precast, exposed aggregate, or medium to hard concrete, make sure you match your bond to the surface you’re cutting.
In general, a softer bond cuts harder concrete faster, while a harder bond lasts longer on abrasive or softer materials. As a result, identifying the right bond early helps you save both time and tool wear.
2. Look at the segment design, not just the tool colour
Next, focus on the design itself. After all, shape matters. The Shark Tooth Core Bit has a serrated edge that bites in clean and fast, keeping the cut straight and controlled.
Consequently, it’s perfect for medium to hard concrete, precast slabs, and exposed aggregate jobs. Furthermore, understanding how the segment shape affects speed and finish will help you choose the most efficient tool for every job.
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 — the barrel simply follows the lead.
By concentrating on the segment first, you’ll naturally achieve a smoother and more consistent result.
4. Get your equipment right
Before you start drilling, it’s equally important to check your setup. Most drills use a 1¼" UNC thread. If you’re running a Hilti, grab a BI+ to 1¼" UNC adaptor for compatibility.
Additionally, check out the full Core Drilling Kit and Accessories range to ensure everything fits exactly as it should. Proper setup not only improves performance but also extends the life of your tools.
5. Invest in Quality — and the Right Range
Finally, remember that not all core bits perform the same. Performance can vary greatly depending on quality and how you use them. Because of this, investing in reliable, high-quality tooling is key when working with different types of concrete. Moreover, the right bit can significantly improve cutting speed and consistency while reducing overall wear.
Depending on your mix of job sites, it’s worth having a few options in your setup. For instance, the Rooftop Core Bit handles medium to hard concrete, while the Highspeed Core Bit is built for dense, high-MPa or heavily reinforced jobs. In other words, each bit has its purpose — and having both ensures you’re ready for any challenge.
Pro tip: Soft bond for hard concrete, hard bond for soft concrete.
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