![]() One of the standout features of this set is the enhanced M42 alloy material. ![]() This set provides upgraded M42 Cobalt jobber-length bits designed for durability, high heat resistance and hardened surface for stainless steel, cast iron, titanium, light-gauge metal and aluminum. Looking for a set of drill bits that can handle even the toughest of materials? Look no further than the Cobalt M42 drill bit set. ![]() It’s also important to choose a drill bit with the right geometry and coating to reduce friction, heat, and wear during drilling.Īre you tired of breaking your drill bits or drilling holes that are not precise and clean enough? Do you want to save time, money, and effort by using the most durable and efficient drill bits for stainless steel applications? Are you curious about the top brands and models of drill bits that professionals and DIY enthusiasts trust and recommend? Keep reading to discover the answers to these questions and more. The right drill bit can make all the difference in achieving the perfect drill in any material, but stainless steel requires a specific type of bit that can withstand its hardness, resistance to heat, and high tensile strength.īefore buying the best drill bits for stainless steel, it’s important to consider factors such as the type of stainless steel you’re working with, the size and depth of the hole you need to drill, the speed and feed rate of your drill, and the precision and accuracy you need for your project. Percussion is used for masonry work, and will only damage the drill bit and work when drilling metal.If you’re looking for the perfect drill bits to use on stainless steel, you’ve come to the right place. Use a center punch to get a starting point for the drill bit, to prevent wandering.įinally, make sure you disable the percussion function of your drill when drilling. Use 5 and then 8, or 3, 6 and 8 or the like). Don't use drill bits that are too close in diameter, as this may cause them to screw into the metal instead of drilling it (for example, for an 8 mm hole, don't use 7mm and then 8mm. For larger holes, it would be best to use progressively larger drill bits. In addition, the required hole size matters - for small holes (up to 3-4 mm) you'd need to be careful lest you break the drill bit (which is quite easy to do). Just make sure to cool the bit between holes. Cooling and lubricating are also important, but for 1.5mm wall thickness I think it's not that critical. High speed drilling will often just overheat the drill bit and the metal, without actually doing anything. A drill press will be very useful here (if you can get access to one). ![]() The goal is to get the drill to "bite" the metal, cutting of shavings. Regarding technique, the trick for drilling hard metals is to drill with a slow speed and high pressure on the drill. They are characterized by a dark golden color (as opposed to lighter golden color of titanium-oxide coated bits, like the ones you've linked) and are more expensive than regular HSS bits. Cobalt steel drill bits are significantly harder than regular HSS drill bits and will cut the stainless steel much better, allowing easier drilling. For drilling stainless steel (which is quite hard, thanks to the chromium), your best bet are cobalt-steel drill bits ( here's an example). ![]()
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