The Best Drill Bits for Metal
Dec 30, · Best Drill Bits for Hardened Metal or Steel Clearly the best drill bits for hardened metal or steel come with a cobalt blend. These cobalt drill bits use an alloy including 5%–8% cobalt. This cobalt makes up part of the steel blend, so the hardness of the bit doesn’t wear off with a . Nov 29, · BEST OVERALL: Hymnorq 1/16 Inch to 1/4 Inch 13PC Drill Bits Set BEST BANG FOR THE BUCK: amoolo 1/8? Titanium Drill Bits (10pcs) BEST STEP-DRILLING BITS: TACKLIFE 5PCS Titanium Step Drill Bit Set BEST FOR HARDENED STEEL: Drill Hulk 1/Inch Cobalt Steel Twist Drill Bits BEST FOR LIGHT-GAUGE STEEL.
Home improvement centers often dedicate an entire aisle to drill bitswhich come in how to open txt files on android plethora of types and sizes for drilling holes in a variety of materials.
Many drill bits can pierce through more than one type of material, but not all drill bits can drill through metal without heating up and snapping in half. If you are working on a what to write on a 30th birthday invitation that requires you to drill through metal, read on to learn about the factors you should consider before you go shopping for the best drill bits for metal.
The following drill bit sets rise above the competition and will help you make holes in myriad metals. Most drill bits fit both standard corded and cordless drills. Bits that drill through metal are further classified by the types of metal they puncture. For example, some bits are capable of drilling through ferrous metals, such as cast iron, and others through nonferrous metals, such as copper and tin.
Most drill bits are made from high-speed steel, cobaltor carbide. Metal drill bits are usually coated with titanium or black oxide. This coating reduces friction, which keeps the drill bit from heating up and eventually breaking. Because the coating reduces friction, it also increases drill speed.
Some shank designs are more conducive to drilling through metal than others. Most shanks for this type of drill bit are either no-spin or hex. Researching shank design, bit material, and bit coatings can be confusing, but fortunately, drill-bit manufacturers make shopping relatively easy for the customer. Here are a few additional tips that will help you drill smoother holes and keep your bits in tiptop shape. The best drill bits for metal should be made from steel intended for the metal you want to drill.
Bits should also be durable and able to withstand the friction and heat produced when drilling through metal. The following recommendations are all what ocean do bottlenose dolphins live in the top of their class for metal drilling, and one or more may be an asset to your tool collection.
The tapered noses and twisted side grooves of the bits in this Hymnorq set quickly penetrate many hard metals including iron to drill a steady, self-centering hole. The bits also work well for drilling softer metals, such as aluminum and copper. The downside is they are not suitable for drilling the hardest types of metal, including titanium and high-carbon steel.
Made from cobalt steel combined with molybdenum for added durability, the Hymnorq bits are friction and heat resistant. The bits come in a plastic case for easy storage. This kit also comes with a center punch for creating a guide dimple in the metal before you start drilling. Made from high-speed steel coated in titanium to reduce friction, these bits are plenty durable for drilling holes in soft sheet metals such as aluminum, alloy, tin, and copper. The step bits also feature an X-type opening shape that helps remove metal shavings from the hole as you drill.
The set comes in a protective aluminum storage case. These bits do not come packaged in a storage case. For easy drilling into light-gauge steel such as aluminum, copper, or alloy, check out the Bosch Metal Drill Bit Set. Manufactured from high-speed steel and coated in black oxide, Bosch drill bits can withstand friction and heat so you can drill continuously without the bits heating up.
Their tapered tips can quickly penetrate the metal, balance the bit, and produce how to copy a cd to usb clean, even hole. If drilling through metal is a new endeavor for you, you likely have some questions. Titanium bits are suitable for drilling through soft metals, such as aluminum, while cobalt bits are better suited for drilling through hard metals like cast iron.
The best way what is the best drill bit for hard metal drill through thick metals is to use a drill press rather than a hand drill—a press will get you a clean, smooth hole. Be sure to drill slowly and use cutting fluid to lubricate the bit too. Let the bit cool down every few minutes to keep it from overheating and breaking. After drilling, wipe away any residue on the bit with a soft cloth and then rub a bit of cutting fluid on it before storing it.
Add a drop or two of lubricating oil to the bit and then grab the broken end of its shank with a pair of pliers. Twist counterclockwise to remove the bit. Disclosure: BobVila. You agree that BobVila. All rights reserved.
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In this go-around, we wanted to identify the best drill bits for metal applications. That includes hardened steel, stainless steel, aluminum, and more.
We even wanted to see which drill bits worked well for drilling out hardened bolts as you might find in an engine block. People also ask us about bits that handle drilling through rebar. These are the bits we turn to and should steer you in the right direction. Clearly the best drill bits for hardened metal or steel come with a cobalt blend.
It runs throughout the entire bit. You can also sharpen these bits—another huge advantage. That matters once you realize cobalt drill bits cost significantly more than other types of twist drill bits. Unlike black oxide or titanium bits, you want to reserve these bits for when you actually need them.
When drilling a hole with a cobalt bit, add a drop of oil on the metal to keep the cutting edge cooler as it cuts. You also want to consider placing some wood underneath the steel if possible. This lets you cut cleanly through the material and not strike a surface below which might dull the cutting edge. When we talk about drilling in hardened steel, we mean medium or high carbon steels typically made using a heat-treatment and tempering process.
Hardened steels are durable and can be wear-resistant, corrosion-resistant, and abrasion-resistant. Much of the steel materials that we see used in mechanical engineering, energy generation, and transportation are basically hardened steel. The best drill bits for metal could be designed for these hardened steel applications or they might be optimized for speed in softer carbon steels.
Stainless steels are steel alloys consisting of at least Because of rust and stain resistance, good luster, and low maintenance, it has many commercial uses including cookware, cutlery, home appliances, construction fasteners, and surgical instruments. However, whatever differences there are between the outer look or chemical composition, both hardened steel and stainless steel are quite difficult to drill into. Using a drill press is often the best way to get quality results.
Drill America makes M42 cobalt bits that held up really well in drilling through anything we threw at them. After testing with a multitude of materials, we selected their jobber bits as our best drill bits for hardened steel. The jobber length bits work really well in cordless drills for onsite drilling.
They come manufactured to the National Aerospace standard Use these bits when drilling tough, high tensile strength materials like stainless steel—or even titanium. It includes 29 bits in a shatterproof case. The round case makes it simple to remove the exact bit you need.
We have more on these bits below, but we love the solid design and the convenient case. They did very well in steel and kept a sharp edge after drilling a large number of holes. If you plan on drilling hardened metal or steels, we love the Irwin piece M Cobalt bit kit as our the best metal drill bit set. It has to do with the use of M42 high-speed steel and its excellent case. This gives it a greater hardness. It also lets you drill at higher speeds than M Which brings us to the case.
If you do a lot of drilling—the case your bits come in matters. We love the easy-access bits, and you can easily tell the sizes from the front of each bit. Overall, this kit gives you the best drill bits for metal applications of all kinds. They make these bits with M42 cobalt steel so they drill really well without heating up quickly. They also seem to hold an edge and stay sharp even after dozens of drilled holes.
With a bit less cobalt in the steel blend, it just heats up a bit more quickly. You get the same great case. The trade-up is cost. We have great news for anyone looking for the best drill bits for stainless steel. The same bits you use on hardened steel work on stainless. Hardened steel is a medium of high-carbon steel that gets heat-treated, quenched, and finally tempered.
As a low-carbon steel, stainless steel has a natural hardness that comes without traditional hardening. Drilling stainless takes a strong bit—the same cobalt bits we recommend above. With that said, stainless can actually harden up as it heats—so drilling slowly often helps you get through the material more efficiently.
Use cutting oil or similar lubricant when drilling into stainless and apply enough pressure to see a steady removal of material. Even the best drill bits for stainless steel heat up over time, so be prepared to monitor heat buildup.
Listed in our best drill bits article, Milwaukee Red Helix cobalt bits use a variable flute design that clears away debris quickly. How quickly? Their unique design not only helps them drill efficiently, but it also aids in cooling. The trade-off is that these bits thin out more towards the tip. However, they also extended the flutes lower towards the shaft.
The result is a more compact bit with a similar drilling depth. We love how quickly these bits drill and also how well they remove steel in tight, efficient spirals. The combination of the unique cutting head and the flute design landed these as our best drill bits for steel—particularly carbon steel.
Thanks to the cobalt steel blend, plan on sharpening these when the tips grow dull from use. The value of this kit makes these the best drill bits for steel. We love the build quality on the DeWalt cobalt pilot point drill bit set. It has a tapered core that gradually adds stiffness to the bit as it gets closer to the base. Sometimes you need to drill through steel…but that steel is buried in concrete. We like the design better than Bosch Rebar Cutters because you use the same bit to drill the hole and penetrate the rebar.
With Bosch, you drill using rotary hammer mode, switch to the Rebar Cutter in rotary-only mode, and then return to your original bit to finish the hole.
These bits drill quickly through concrete then continue right through rebar. As we mentioned above, Bosch Rebar Cutter bits present a viable option, but they slow you down when working. These bits should last a good while since they only cut the metal of rebar, but we prefer a single cutting solution overall.
Shop Bosch Rebar Cutters here. It can tackle stainless steel and certainly anything softer or milder than that. Because they work effectively in both metal and wood, any Pro looking for a general-purpose set of hole saws should quickly fall in love with their productivity.
The cobalt blend gives these bits a much longer life. Since step bits are both expensive and extremely difficult to sharpen, we like them to last as long as possible.
Irwin gives these bits a Speedpoint tip. It helps get the hole started quickly and reduces wandering. We also have to admit these became our best step bits for metal in part because Irwin laser-etched the measurements right on the inside of the flute. Several step bits make for viable solutions for electricians and others looking to drill through sheet metal and thicker materials. While we favor the Irwin Cobalt models above, the dual-fluted Milwaukee Step Bits come in handy configurations to tackle common job site needs.
Diablo step bits promise twice the cutting speed and up to 6X longer life. They attribute this, in part, to a precision CNC grinding process. Drill bits made with a Titanium nitride coating resists corrosion and friction.
It beats black oxide in that it increases surface hardness and does a better job reducing heat while drilling through metal. For metal drilling, we definitely put these as the bare minimum. With titanium nitride, you have to remember it only coats the bit. As the coating wears off the cutting edges, you pretty much have to replace them. That also means you can sharpen them before having to replace them.
This helps save money when you buy these more expensive bit sets. Cobalt bits are our go-to for drilling through metal—particularly hardened steels and stainless steel. We probably missed something along the way—we get it. At some point we have to draw the line and finish the article. With that said—let us know what you think the best drill bits for metal are. We know personal preferences take a front seat in determining the best drill bit, and every Pro is different.
Do Pro Tool Nation a favor and tell us what your top pick is and why you love it. Feel free to put it in the comments below or on Facebook , Instagram , and Twitter! Our Pro reviewers work in the trades and have the skills and experience to know whether tools can perform well in the field. Each year, we bring in and review more than individual products.
Our team will put our hands on hundreds of additional tools at media events and trade shows throughout the year. We consult with innovators in the technology and design of tools to gain a broader grasp of where these products fit and how they work.