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Diamond Core Drill Bit
- 3" Diamond Core Drill Bit is built to tackle the tough materials with ease, whether it's concrete, brick, stone, or masonry. Crafted with precision and designed for durability, this diamond core drill bit is a for professionals and DIY enthusiasts.
- It’s ideal for installation projects such as HVAC systems, range hoods, and stair railings, as well as larger infrastructure tasks like roadways and airports.
Key Features:
- Standardized Thread for Compatibility: The 1-1/4”-7 thread size is an industry standard, allowing this bit to be compatible with most core drill machines.
- This ensures seamless integration into your existing tool kit and makes it an extremely versatile addition.
- Drilling Depth up to 15-3/4" inch
Premium Diamond Core Drill
- Diamond core drill bit with laser-welded segments and cutting-edge welding technology ensures the teeth stay sharp and resilient, ideal for consistent and demanding use.
- The diamond core drill bit is crafted with superior diamond grits and an aluminum alloy core, providing a robust tool that delivers smooth, efficient, and precise drilling operations, minimizing wear and maximizing productivity.
- Chip Removal Slots between Diamond Segments, ensures that debris is effectively cleared during drilling.
Usage Tips
Use a Heavy-Duty Drill
- A power core drill with 1-1/4"-7 thread connector is recommended, to avoid burning out the motor while dealing with tougher materials.
- Start the core bit tipped at about 15 to 30 degrees to make a divot and prevent the bit from walking around.
Dry Drilling in Brick Wall
- When the bit is coring into the material, bring the bit to 90 degree and hold it steady to allow the drill bit to do the work.
- Use a vacuum cleaner if possible to keep the dust down, and cover your eyes, mouth, nose and ears with necessary equipment.
Wet Coring Concrete Ground
- Drill Slowly and Steadily: Start the core bit tipped at about 15 to 30 degrees to make a divot and prevent the bit from walking around.
- Operate the drill between 200 and 500 RPM for best results.
Keep Everything Cool
- Apply water supply if possible or use scrap foam pieces soaked with water to keep the bit and drill cool.
- Regularly rinse the hole with water, especially when drilling vertically, to minimize heat buildup.
Applicable Scenarios
Professional Uses
- Engineering and Construction Needs: Used for drilling into hard rock for safety rails or conduit installations.
- Example: “Drilled through granite for conduit enetrations.”
Gardening and Landscape Design
- Creating Water Features and Enhancements: Excellent for drilling into stones or bricks for fountains or other features.
- Example: “Cored out a boulder for a bubbling fountain in the garden.”
Home Repairs and Installations
- Replacing Equipment and Pipes: Ideal for drilling through solid surfaces for installing new systems or replacing old ones.
- Example: “Drilled a breather hole in a concrete slab for a tankless water heater.”
Construction and Renovation Projects
- Drilling Through Concrete Walls: Perfect for installing vents, drains, and other fixtures.
- Example: “Used this drill bit to make holes in a concrete wall for ventilation.”
- Example: “Drilled through a poured concrete foundation wall to run electrical lines.”
Versatile Drilling Capabilities:
This core drill bit is designed to drill through various materials, including cured concrete with rebar, brick, block, marble, rock, and stone.
Brian Eastwood
Reviewed in the United States on December 19, 2024
Not used it just yet, but looking at it one can see it is very well built and certainly designed for penetrating so thick walls.
Craig Wilson
Reviewed in the United States on December 10, 2024
I had good results with this drill bit. I use these to blow holes through concrete block to run wire through. I have had good luck, just keep the bit cool and don't go too fast and this will make some good holes. Not the fastest bit I have used but it does cut. You do have to have the right fittings to screw into this bit, it does not come with the SDS Plus or Hex Shank to go into your drill, you need to provide that. Overall not a bad tool, good length and good machining.
BRoller
Reviewed in the United States on December 1, 2024
This bit works great on non reinforced concrete, i have not used it wear I hit rebar so I can't say that it doesn't work but I know it works great for sections without rebar.
Stefanie & Geno
Reviewed in the United States on November 6, 2024
A. M. Chenoweth
Reviewed in the United States on November 19, 2024
This 2-inch diamond core drill bit seems well-built, with an impressive length that looks perfect for deeper drilling tasks. The diamond cutting surface appears robust and ready to tackle tough materials like concrete or stone. Unfortunately, I wasn't able to use it because the connection type didn’t match my drill, which was a real disappointment. I wish there had been clearer photos or details of the connection before I purchased it. I’ve taken some pictures to help future buyers avoid the same issue. Aside from that, it feels durable and well-constructed, so it should work great for those with the correct setup. Make sure to double-check your drill’s compatibility before buying. It’s a solid tool if you can use it!
D.L.
Reviewed in the United States on October 11, 2024
This 2” diameter core drill looked promising, especially due to its 17.7” length, which is just what I needed to drill holes in a rock wall for a stairway handrail.The bit I received was well machined, straight and on-center, with no wobble. Unfortunately, it was a little lacking in diamonds. One of the four cutting edge’s bottom face was completely devoid of diamonds. Upon inspection I thought perhaps the paint was hiding them, so I figured I’d “dress” the bit by using it first in a soft sandstone boulder. It cut through the 10” thick sandstone without issue, a bit slower than I’m use to, but acceptable. Inspecting the bit after that first hole revealed there were no diamond chips on one of the four cutting faces. This obviously slows down drilling. The side faces had what I consider a light sprinkling of diamonds, perhaps a few dozen small chips per face.After trying the bit on the soft sandstone, I drilled a hole in a one-inch-thick stamped concrete paver. In both cases using a core-drilling rig with a water feed for cooling and chip removal. It cut the concrete ok, again, a bit slower than other bits I’ve used. I did not force the bit, I let it cut at its rate.Bottom line: The machining and alignment of this bit was top-notch, unfortunately the number of diamonds on the bit I received was lacking, resulting in slow cuts and shortened bit life. At a cost of nearly $50, I expected better.
Prakash S Patel
Reviewed in the United States on October 10, 2024
The 2" Diamond Core Drill Bit with a total length of 17-3/4" is a high-performance tool that has truly impressed me. Its laser-welded segments offer durability and efficiency, making it ideal for drilling through cured concrete, brick, stone, and masonry walls and floors. The 1-1/4"-7 thread ensures a secure connection to most drills, providing excellent stability during use. I found its long reach especially useful for deeper drilling tasks, and it cuts smoothly without overheating. Whether you're working on tough construction projects or DIY masonry jobs, this bit is a great investment for precision and longevity! Highly recommended!
Matthew C
Reviewed in the United States on October 10, 2024
For folk who find it challenging to use this with their normal or impact drill, that is because this is meant to be used with a hammer drill. It needs the hammering motion in addition to the rotation to work best. And, it works through the concrete darn quickly when used right. Made great and even holes. It still worked with a normal drill, just not as well. And the folk who notice the wear on it, that is part of the reason.
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