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Carbide drill bits are known for their outstanding strength and durability, ideal for heavy-duty drilling. Crafted from a blend of tungsten and carbon, they offer remarkable hardness and wear resistance, making them perfect for drilling into tough materials such as metal, concrete, and stone.

Please note, these are our test results from internal testing. We have recorded a video of each hole being drilled. These videos are available on request for your test accuracy verification purposes.

Adiseal Ultimate 10mm metal drill bit price: £10.14Cost per hole (£10.14 / 135 holes): £0.076666Cost to drill 10 holes with Adiseal Ultimate metal cobalt: £0.77

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Adiseal Ultimate metal drill bit drilled 135 holes in total which was 9 times more holes than the best metal cobalt drill bit from Bosch (which only managed 15 holes in total). It also drilled more than 3 times the number of holes than the best DeWalt metal cobalt drill bit (which managed 39 holes in total). Adiseal Ultimate metal drill bits was easily the most durable metal drill bit.

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The results of the test showed the new Adiseal Ultimate metal drill bit emerged as the clear winner, surpassing all competitors in both the number of holes drilled and the time taken to drill each hole. Below is a table of the results.

A more durable drill bit with longer life can be more value for money as they can drill more holes, overall costing less per hole. Cheaper drill bits may end up costing more money over time if they wear out quickly and drill fewer holes than longer lasting bits. Calculate the cost per hole by dividing the drill bit’s price by the total number of holes drilled. Cheaper bits might actually have a higher cost per hole than more durable ones. In our test, Bosch PointTeQ’s non-cobalt bit failed to drill any holes, while the Adiseal Ultimate metal drill bit successfully drilled 135 holes in total.

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The interplay between these factors underscores the importance of a well-considered approach to selecting carbide inserts. A misstep in choosing the right insert can lead to decreased efficiency, increased tool wear, and suboptimal machining results. Therefore, it is essential for machinists and engineers to have a comprehensive understanding of the available options and their respective benefits. Manufacturers often provide detailed charts and recommendations, offering guidance on the optimal inserts for various materials and cutting conditions. These charts, rich with data on insert grades, geometries, and coatings, serve as invaluable resources in the decision-making process.

Other advantages of the Adiseal Ultimate metal drill bit include bigger chip removal and cleaner cut holes compared to the competitor bits.

In the intricate world of machining, where precision and efficiency reign supreme, carbide insert stand as pivotal tools, shaping the industry's landscape. Their significance, however, is often understated, overshadowed by the complex machinery they complement. To truly appreciate these marvels, one must delve into the nuanced realm of carbide inserts, exploring their characteristics, applications, and the subtle interplay that defines their performance.

ISOinsertnomenclature pdf

The toughest drill bits are crafted from carbide, a highly durable and wear-resistant material. Typically employed for drilling into tough materials like metal, concrete, and stone, carbide drill bits also excel in precision drilling due to their ability to maintain a sharp edge over prolonged use.

To compare costs, let’s consider drilling 10 holes in 6mm stainless steel with the Adiseal Ultimate and the best Bosch cobalt drill bits.

Adiseal Ultimate at an average of 31.7 seconds per hole, was over 4 times faster than the best cobalt metal drill bit from Bosch which took on average 132.4 seconds per hole.

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The advancement in carbide insert technology continues to push the boundaries of what's possible in machining. Innovations in material science and coating technologies contribute to the development of new insert formulations that promise even greater performance and durability. As industries demand higher precision and efficiency, carbide insert manufacturers are continually evolving their products to meet these needs. This dynamic field ensures that machinists have access to cutting-edge tools that enhance productivity and deliver exceptional results.

Adiseal Ultimate drill bits surpass Makita drill bits in various tests. The Adiseal Ultimate metal drill bit drilled 135 holes in stainless steel, while the Makita metal drill bit managed only 12 holes. Moreover, the Adiseal Ultimate metal drill bit exhibited more than double the speed of the Makita drill bit when drilling into 6mm thick stainless steel (SUS304).

One of the most critical aspects of selecting the right carbide insert is understanding its grade. The grade of an insert determines its hardness, toughness, and overall performance under various cutting conditions. For instance, inserts with a high cobalt content are generally tougher and more resilient, making them suitable for machining tough materials like stainless steel. Conversely, inserts with a higher tungsten carbide content excel in hardness and wear resistance, ideal for cutting harder materials such as high-speed steels.

In the UK to buy the best metal drill bits or to buy the best masonry drill bits, please contact us for details of your local stockist. For other countries, please visit www.guglue.com

Drilling into abrasive materials like concrete can wear out drill bits, especially if they are not durable. It can also take some time and energy to drill into.

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The coating applied to carbide inserts also plays a significant role in their performance. Coatings such as titanium nitride (TiN), titanium carbonitride (TiCN), and aluminum oxide (Al2O3) enhance the insert's ability to withstand extreme temperatures and abrasive wear. TiN, for instance, provides a hard, lubricating surface that reduces friction and extends tool life. TiCN offers superior resistance to abrasive materials, making it ideal for cutting harder metals. Aluminum oxide coatings contribute to the insert's heat resistance, essential for high-speed cutting operations where temperatures can soar.

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Carbide inserts, integral components in turning and milling operations, are crafted from a combination of tungsten carbide and cobalt. This blend yields a material with exceptional hardness and resistance to wear, ideal for cutting tools that must endure intense conditions. The unique properties of carbide inserts are largely dictated by their composition and the specific manufacturing processes they undergo. These inserts come in various grades and geometries, each designed to tackle different machining challenges.

For wear resistance testing purposes, the drilling was carried out without lubricants, coolants, or cutting oils, although these can help reduce the bit’s temperature and extend its lifespan. The drilling processes were video recorded and timed using video timestamps.

As can be seen in the calculation above, it is over 7 times more expensive to drill each hole with the best metal cobalt drill bit from Bosch compared to Adiseal Ultimate metal cobalt drill bit. Based on cost per hole, Adiseal is more value for money. We have not even included the extra savings that can be made on the energy required to drill each hole.

Another pivotal factor is the geometry of the carbide inserts. The shape and design of an insert significantly influence its cutting capabilities and efficiency. Common geometries include the triangle, square, and round inserts, each catering to different machining needs. Triangular inserts, for example, are prized for their versatility and durability in turning applications. They often feature three cutting edges, providing extended tool life and the ability to handle varying depths of cut. Square inserts, on the other hand, offer stability and are frequently used in milling operations, where precision and consistent performance are paramount. Round inserts are celebrated for their robustness and are typically employed in heavy-duty machining tasks, where they can absorb high levels of shock and vibration.

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For thick steel drilling, the best option is a cobalt drill bit. Made from a durable alloy of cobalt, tungsten, and chromium, cobalt drill bits excel in hard material drilling such as steel, cast iron, and stainless steel. Their high heat tolerance is essential for thick steel drilling, as the process generates considerable friction and heat.

Several non-cobalt metal drill bits like the Milwaukee Thunderweb, were also tested but excluded from the chart for fairness purposes. The non-cobalt Bosch PointTeq metal drill bit did not manage to drill any holes in the 6mm thick stainless steel SUS304 in our tests.

Adiseal Ultimate carbide masonry drill bit can drill into brick, concrete, wood, cinder block, plaster and many other building materials. Adiseal Ultimate carbide drill bit has been demonstrated to be the best heavy duty masonry drill bit with a hex shank.

To find out what the best metal drill bit is, we carried out a series of tests with drill bits from several different brands such as Milwaukee Cobalt Red, DeWalt Extreme, Bosch Cobalt, and Makita along with the new Adiseal Ultimate metal drill bit. Using a Scheppach DP60 drill press, the test was to drill as many 10mm holes as possible in 6mm thick stainless steel (SUS304). To conduct a fair and accurate test, the we set the drill press to maintain a consistent speed of 400 rpm. We also attached a 5kg weight to the drill press arm during each hole’s drilling, maintaining uniform force and RPM for fairness.

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Choosing the right carbide insert involves a delicate balance between these various factors, each tailored to specific machining conditions and materials. Understanding the material properties of the workpiece, the type of machining operation, and the required precision helps in selecting the optimal insert. For example, machining aluminum often necessitates inserts with a special coating and geometry designed to handle the material's tendency to adhere to cutting tools. On the other hand, machining harder alloys might require inserts with enhanced toughness and wear resistance to maintain performance and extend tool life.

In summary, carbide inserts are more than just components of cutting tools; they are precision instruments engineered to meet the demands of modern machining. Their performance is influenced by a complex interplay of factors including grade, geometry, coating, and material properties. By understanding these elements and staying abreast of technological advancements, machinists can unlock new levels of efficiency and precision in their operations. As the industry continues to evolve, the role of carbide inserts remains central to achieving machining excellence, making them indispensable tools in the quest for perfection.

Cobalt drill bits excel in drilling hard materials, offering durability and wear resistance. On the other hand, HSS drill bits are versatile and cost-effective, making them suitable for a broader range of drilling tasks.

To find out what are the best drill bits, we carried out several tests including drill bit durability tests and drilling speed tests. There are many different types of drill bits available. We tested the new Adiseal Ultimate drill bits against the best metal drill bits and best masonry drill bits from top brands including products from DeWalt, Bosch, Makita and Milwaukee.

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The hardest masonry drill bits are typically crafted from tungsten carbide, renowned for its extreme hardness and durability. Tungsten carbide surpasses the materials it drills into, like concrete, brick, and stone, making it ideal for prolonged use without premature wear or breakage.

These end mills are intended to cut tough and abrasive materials, ranging from medium to the greatest hardness levels machinable by end mills.

The Adiseal Ultimate range also includes the fastest no-hammer masonry drill bit and multi-material drill bit. It was found to be the best masonry drill bit in our tests. It had the fastest drilling speed when drilling without hammer function on the drill. Drilling without hammer function provides numerous advantages over hammer drilling including:

Adiseal Ultimate metal drill bits and masonry drill bits were found to be the best drill bits in our tests. They were found to be the most durable in our tests, drilling more holes than the competitor drill bits. They also drilled faster than any other drill bit in the drilling speed tests.

Bosch cobalt metal drill bit price: £8.31Cost per hole (£8.31 / 15 holes): £0.554Cost to drill 10 holes Bosch metal cobalt: £5.54

Adiseal Ultimate metal drill bit also outperformed all other metal drill bits in terms of drilling speed. With the same test as before, we also measured the time it took to drill each hole. We worked out the average of the first 10 holes and listed the results in the table below. The Adiseal Ultimate metal bit consistently drilled holes significantly faster than any other bit, demonstrating its exceptional efficiency and time-saving capabilities.

Cobra Carbide's tool offering includes Burrs in shapes A-N. These are some of our double cut Shape N burrs manufactured in Riverside, CA.