High drilling temperatures cannot be tolerated by these cobalt drill bits in order to improve performance over a solid surface.<\/li>\n<\/ul>\nThis Cobalt Metal Drill Bit Set is yet another excellent illustration of why Bosch is the most reputable brand in the power tool and accessory market. Therefore, this BOSCH Cobalt Metal Drill Bits Set is highly recommended, especially if you’re on a tight budget, whether you require a wide variety of high-quality cobalt drill bit sets for drilling through abrasive materials or light-gauge metal.<\/p>\n
This 21-piece cobalt bit set features laser-etched size markings and a 1\/16 to 12 size range. So selecting the correct size drill bit from the neatly organized portable carrying case won’t be a major deal.<\/p>\n
What we like:<\/strong><\/p>\nThis reasonably priced set of 21 cobalt drill bits features a three-flat shank, a no-skate split-point tip, and laser-etched markings. These can drill a precise hole through soft and hardening materials since they are extremely heat resistant and robust.<\/p>\n
What we didn’t like:<\/strong><\/p>\nThe risk of damage also rises with the smaller drill bits since they need more force to bore through.<\/p>\n
<\/span>The Best Cobalt Drill Bit Set Considerations<\/span><\/h3>\nSize:<\/strong> Drill bits that are shorter in length are more durable than those that are longer, while longer drill bits lose strength and crack resistance. Additionally, shorter drill bits are less likely to twist, spin, or break. The shorter drill bit is the best option for the demanding task because of its short construction and increased twisting capacity.<\/p>\nTip:<\/strong> Drilling through a difficult surface requires a cobalt drill bit with the proper tip. To drill through heavy metal without sliding, select a cobalt drill bit set with a stepped tip and split points. In addition, depending on the task at hand, you can select between V-point, fish-point, tapered-point, and brad-point.<\/p>\nCobalt content:<\/strong> For best results, choose a cobalt drill bit set that contains a larger percentage of cobalt. Additionally, it strengthens the cobalt drill bit and boosts its heat resistance. The M42-grade cobalt bit is often made using 8% cobalt, compared to the M35 grade’s utilization of only 5%.<\/p>\nCobalt drill bits that combine steel provide tremendous performance and efficiently drill through cast iron, stainless steel, and other solid metals. Nevertheless, a metal oxide coat should be present on the drill bit set for increased wear and corrosion resistance.<\/p>\n
<\/span>Different Cobalt Drill Bit Types<\/span><\/h3>\nIn general, there are four basic types of cobalt drill bits, each with a specific function. Knowing these sorts will make it easier to select the ideal cobalt drill bit and get the necessary performance.<\/p>\n
Twist<\/strong><\/p>\nThe twist drill bit has a spiral around the shaft with angled grooves. Its angle’s edge is extremely sharp and effectively drills through the material. The cobalt twist drill bit can quickly drill through hard materials and is appropriate for a variety of materials. Twist bits come in a variety of sizes and come in sets with up to 30 pieces.<\/p>\n
Countersink<\/strong><\/p>\nThis cobalt bit is perfect for making small, flush-fitting holes in the fastener heads of workpieces. Additionally, it works well for drilling countersink holes in hard surfaces. While countersink bits can only drill through the material’s existing hole, twist drill bits have self-piloting tips.<\/p>\n
Counterbore<\/strong><\/p>\nThis Counterbore cobalt drill bit will be useful if you need to set the fastener hole below the work surface. This drill bit can drill through a wider hole at a shallower depth than countersink bits, which drill an angled hole for an angled head fastener. Additionally, this cobalt piece leaves a flat ridge where the headrest fastener rests.<\/p>\n
Blue Step<\/strong><\/p>\nWhen drilling through sheet metal, these Cobalt step drill bits come in helpful. The operator can manage the hole’s diameter since it can increase the hole’s size as it moves through the sheet metal. This step cobalt bit makes it simple to drill through sheet metal that is 1\/4 inch thick.<\/p>\n
<\/span>Titanium vs. cobalt drill bits: differences<\/span><\/h3>\nBoth kinds of drill bits have peculiar characteristics yet are suited for robust and long-lasting performance. Cobalt is a robust but brittle drill bit, whereas titanium bits lost their coverage as they were sharpened. You can learn a little bit about these two drill bits by reading the cobalt vs. titanium debate guide:<\/p>\n
Construction<\/strong><\/p>\nThe substance used to create them is the main distinction between the cobalt bit and the titanium drill bit. The majority of titanium drill bits are constructed of HSS and coated with titanium carbon or titanium nitride. On the other hand, cobalt drill bits are made from steel alloys that mostly contain cobalt.<\/p>\n
Coating<\/strong><\/p>\nThe fact that titanium eventually loses its titanium covering is another crucial point. You will still just have a high-speed steel bit even after sharpening the bit. As a result, the titanium drill bit loses its titanium cutting edge after being sharpened. However, a cobalt drill bit’s advantage is that after resharpening, it can maintain the cobalt alloy. Cobalt alloy drill bits are a far better and more profitable investment than titanium drill bits since they will provide you with long-lasting, high-quality service.<\/p>\n
Which drill bit is superior, cobalt or titanium?<\/strong><\/p>\nCobalt drill bits cost more than titanium drill bits but are more durable and heat resistant. Additionally, you want to choose a set of cobalt drill bits if you need to work on a variety of materials to provide great service. The titanium drill bit set, on the other hand, is a cost-effective option and best suited for wood and softer metals.<\/p>\n
<\/span>Tips for honing cobalt drill bits<\/span><\/h3>\nA cobalt drill bit can be sharpened to regain its capacity to cut quickly and provide a flawless hole.<\/p>\n
The cobalt drill bit is available in a variety of diameters and angle points depending on the type of task and the working surface. Cobalt drill bits have an impressively high level of heat resistance, making them ideal for frequent usage. But regular use wears down the cobalt’s cutting edge, which needs to be sharpened. This calls for a bench grinder after a simpler procedure of sharpening cobalt drill bits:<\/p>\n
Get ready to do the work<\/strong><\/p>\nWhen you sharpen a cobalt bit, steel shavings may fly into the air and hurt your eyes. Wear safety glasses to protect your eyes from flying debris. The bench grinder should then be turned on and set to a slower speed.<\/p>\n
Look over the cobalt drill bit<\/strong><\/p>\nCheck the drilling edge while holding the cobalt drill bit’s smooth end in your finger. Look at the point at the end of the bit and note how the ridges around the narrow shape.<\/p>\n
The drill bit in opposition to the sharpening<\/strong><\/p>\nBring the grinder near while firmly holding the drill bit. Gently tap the conical top’s sloped side against the grinder while holding the cobalt bit at a 60-degree angle. After a brief interval, remove the drill bit from the grinding wheel and press it firmly against the grinder once more. Continue sharpening the bit’s sides as well as the top, which has become narrower.<\/p>\n
Examine the crispness.<\/strong><\/p>\nIf the bit is still sharp enough after using your finger to test it, continue with the process. Don’t grind away the drill bit too much or the cobalt drill bit may be damaged.<\/p>\n
Important benefits of cobalt drill bits<\/strong><\/p>\nDrill through solid materials, such as titanium and stainless steel, with cobalt drill bits, which are made of steel and have a robust quality structure. The majority of cobalt drill bits have cobalt M35 and M42 grade construction to extend bit life and provide heat resistance while drilling through challenging surfaces.<\/p>\n
Operation versatility:<\/strong> The majority of cobalt drill bits are compatible with a wide range of power tools. There are several sizes of cobalt drill bits that fit into the power tool securely and drill through heavy-duty work without twisting or spinning. This drill bit can be used to bore through a wide range of objects, including hard surfaces like plastic, wood, and stone.<\/p>\nEffective DIY projects:<\/strong> The portable set of Cobalt drill bits ensures precise drilling, making them convenient and safe for DIY enthusiasts. Despite this, these drill bits include size indications and are wear-resistant, allowing the DIYer to choose the right size bit for the job. With the most popular drill guns and a number of domestic applications, cobalt drill bits deliver dependable and high-quality performance.<\/p>\nUsing a cobalt drill bit properly is vital for maintaining its sharpness.<\/strong><\/p>\nThe cobalt drill bit can effectively drill through plastics, wood, and other soft materials, but if it is used only for these types of materials, it may become damaged. Despite using the following methods, the cobalt drill bit set will continue to work powerfully:<\/p>\n
Polish the cobalt bit.<\/strong><\/p>\nUsing a bench grinder or belt sander, you may quickly and effectively sharpen the cobalt drill bit. For greater results, you may even spend money on an industrial sharpener. It implies that you won’t need to buy or replace the following cobalt drill bit set after a few uses or when it becomes worn out. However, avoid wearing gloves and keep your hand away from the sharpener because they can become tangled and hurt you.<\/p>\n
Wear safety equipment<\/strong><\/p>\nA cobalt drill bit is a strong accessory. But while drilling through, its tip may split, produce sparks, and do a lot of other things. Wearing protective gear will enable you to use a cobalt drill bit safely.<\/p>\n
Frequent flute maintenance<\/strong><\/p>\nPull out the bit after drilling a few inches to get rid of the wood chips or flakes in order to preserve the cobalt bit’s sharpness. Otherwise, the flakes risk getting lodged in the bit’s flutes and making it hotter and more quickly dull. As a result, you will need to periodically sharpen the bit.<\/p>\n
Use the stop-and-cool method.<\/strong><\/p>\nThe stop-and-cool approach can be used to keep the cobalt bit sharp, especially when drilling through hardwood. You might keep some cold water on hand and frequently use it to rinse the drill bit.<\/p>\n
Use a set of two cobalt drill bits.<\/strong><\/p>\nIf you could handle two sets of cobalt drill bits, that would be preferable. Use the new set to drill through the beginning hole as advised by the expert. then use a newer cobalt bit to drill through the remaining material. Sharpen the bit after finishing the job to keep it ready for future projects.<\/p>\n
<\/span>Best Cobalt Drill Bit Set FAQs<\/span><\/h3>\nM35 or M42 cobalt drill bits: which is superior?<\/strong><\/p>\nA larger concentration of cobalt results in a cobalt drill bit that is more durable and heat resistant. Cobalt drill bits are often comprised of a combination of steel and cobalt components. Compared to the M35 cobalt bit, which has 5% cobalt, the M42 cobalt bit has 8% cobalt. The M42 cobalt bit is generally appropriate for boring through tougher metals, whilst the M35 cobalt bit is perfect for drilling through metals. Another crucial point is the costlier and more fragile nature of higher-quality cobalt pieces.<\/p>\n
Cobalt drills: are they the best?<\/strong><\/p>\nCobalt drill bits are incredibly powerful and ideal for cutting through the majority of hardened metals, including cast iron, bronze, stainless steel, and titanium. A cobalt drill bit with a good cutting edge will survive longer than an ordinary HSS drill bit. Even so, they are better for repeated use and have greater heat resistance than titanium drill bits.<\/p>\n
The Cobalt drill bits are produced by whom?<\/strong><\/p>\nThere are many well-known and renowned names in the power drill and attachments sector. The most dependable cobalt bit manufacturers among them are Bosch, DEWALT, and IRWIN.<\/p>\n
What drill bits have a harder hardness than cobalt?<\/strong><\/p>\nDrill bits made of titanium are more durable than cobalt drill bits and have a higher hardness. These are also effective in cutting through strong metal. However, cobalt drill bits may be re-sharpened and have a long-lasting coating, in contrast to titanium drill bits that have a short-lived coating and cannot be sharpened.<\/p>\n