What are the best drill bitsfor metal

I knew going in that by cutting (with a cut-off wheel) and grinding the linkage it would work harden. That didn’t seem to be too big of a problem because I could anneal it after trimming it to shape.

Thank you sir for your effort to make this blog. I went to HD and got some carbide tip masonry bits for stone and glass and though they don’t last more than four cuts each, if you get the four pack of 1/8″- 5/16″ you can stretch the life of each bit to get around four full 5/16″ holes in 1/4″ hardened steel ‘T’ Rails . Four 5/8″ holes makes one full corner of a Deer Fence. This was a prayer come true for me, literally. God bless.

Best drill bitsfor steel

I broke two stainless bolts in the head of my ex-US Army jeep engine which defied left hand bits, quality HSS right hand bits, gas and brute force. They were just an inch long and eventually we got a small pilot hole and a pile of blunt drills. I read that cobalt drills were worth trying, found the TTP site, saw the videos and ordered two of two sizes (in case they got blunt?). A decent-ish corded drill and a single TTP just sliced through both bolts using plenty of oil and low speed as advised in the vid and info leaflet. After a wipe with a rag the drills went in the tool box – though I couldn’t tell which was the used one and which was unused. It sounds corny but I should have got the TTP drills earlier and saved a lot of time and hassle.

TTP may sell tough products but I found them anything but tough to deal with, communications were excellent and the drills arrived on time and well packaged. I would deal with them again without hesitation and can highly recommend their products and service. Thanks TTP.

Best drillbit set for home use

Finally, while rummaging through various drill bits at Home Depot, I spied a goofy-looking one with no flutes that is designed to drill through granite tile.

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I was very happy with my purchase of the tough drill bits , they allowed me to drill out some broken off tensile bolts from a 25 year old motorbike cylinder head , failure in this would have meant finding a new head or abandoning the project

Wayne Scraba is a diehard car guy and regular contributor to OnAllCylinders. He’s owned his own speed shop, built race cars, street rods, and custom motorcycles, and restored muscle cars. He’s authored five how-to books and written over 4,500 tech articles that have appeared in sixty different high performance automotive, motorcycle and aviation magazines worldwide.

In the process, I tried pretty much everything in my tool chests. I tried to drill the hole with three different drills—a conventional 3/8-inch Makita variable-speed electric, a Mac Tools air-powered drill, and a ½-inch Makita hammer drill.

I would’ve thought of cobalt bits and a drill press first. Never thought about how hard tile is though. I’ll have to keep this in mind.

Which DeWaltdrill bits are best

Ever drill through porcelain tile? Decades ago I ruined a few bits doing that until using a diamond bit from Grainger. All I know is 1) LOW-MODERATE RPM on the drill of choice with Moderate to Heavy Force. 2) Did I mention LOW RPM (“feel out” your drill, bit and material and make adjustments) 3) Cup of WATER to dip the bit in every 5-10 seconds of drilling. Don’t wait for the smoke, Steam from the bit is ideal, just re-dip. I only use oil/lubricant in certain applications. 4) Keep debris out of the Hole with a small pick or canned air. 5) Start with a center punch to index the hole then ALWAYS make a Starter/Pilot Hole. 6) 5/16″ Hardened Steel Center Punch then 1/8″ Cobalt 135° pilot point bit, progress up 1/4″ etc… Mayhew Center Punch DeWalt Cobalt Alloy Steel Bit Pilot Point 135° (I also use High Carbide or Solid Carbide) DeWalt 3/8″ or 1/2″ Variable Speed Drill Get’s you through 95% of Hardened Steel ?

I had already wasted a mix of various ten HSS, Tungsten and Titanium coated drills without even successfully drilling one hole and was running out of ideas. After trawling the internet I came across the TTP drills and was so impressed with the video I ordered a selection of sizes to try them out. What a difference! A firm pressure and some jiggling with the drill speed soon resulted in the drilling of all the holes with one drill and with the same curl of swarf seen on the video. The other drills produced dust, if I was lucky.

We sent our drill bits to renowned locksmith Wayne Winton from Tri-County Locksmiths in Colorado to see what he thought of them. Here are just 2  of the videos he posted on Youtube.

Reviews from some of our clients who rank TTP HARD drills as the best cobalt drill bits for drilling harder metals including stainless steel.

Deep bow to this advice. Unfortunately, I went through the same struggles as this gentlemen, trying to drill a broken tap into a hole. The granite drill bit mounted on a Dremel went through the tap like butter.

Once cooled, the column shaft was clamped into the vise of a Bridgeport mill. The end result (following several attempts—all with more annealing) was a small dent in the hardened shift lever using a 1/8-inch bit. That ‘dent’ measured approximately 0.010-inch deep. It wasn’t looking good.

I searched the internet for answers. I found a bulletin board post where someone said a masonry drill bit would work perfectly for my dilemma. I bought a masonry bit. Unfortunately, that didn’t work either.

Best drill bitsReddit

How about that! This worked for me. I had a sprocket I needed to open the rollpin size up to 3/16. None of my carbide or titanium bits would touch it.

Just to let everyone know these drill bits are BRILLIANT, it is the first time I have ever worked with metal and was using Bosch titanium bits, managed 3 holes with 3mm drill bits. Then I ordered TTP bits and they were like a hot knife through butter. I was drilling 1cm hard steel and the job was so easy. Highly recommended, don’t buy expensive imitations.

All of the screws on my ar15 are hardened steel and the torque screws wont come out I’m gonna try this and hopefully it works. Thankyou

I needed to drill a hole through hardened steel—in this case, the piece of steel was what was left of the lower shift lever on a steering column.

[…] Drill bit hunt for hardened steel work: https://www.onallcylinders.com/2020/01/31/hunting-for-a-drill-bit-to-drill-through-hardened-steel/ […]

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Awesome info. I’ve been a heavy equipment mechanic for 40 years. Always great to learn more to make a job (and life) more easy ! Thanks for sharing.

You never tried the M42 8% cobalt drill bits ? This is the industrial standard for drilling hard steel. https://drillsandcutters.com/1-60-cobalt-steel-jobber-drill-set-60-pieces/?gclid=Cj0KCQiA4NTxBRDxARIsAHyp6gAVLrm4xT-K5i72Yj6M1rDntyFbCPrCl_pk-LA5LepPAb_2X7wN3JAaAtGIEALw_wcB

Best drill bitsfor wood

They are fabulous. I still haven’t had the time to use them for their actual intended purpose – drilling out exhaust manifold studs, but I did try them out on a couple of bolts to see how they did and was very impressed! Told a bunch of my friends about them. Hoping to get a joint order together. I want more sizes or one of the sets!

It is the carbide in tip of the tile-drill that makes the magic happen. That specific magic is being harder then the material to be cut.

Best drill bitsfor hardened steel

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Since I had a hammer drill, I figured I had nothing to lose. I was certain this would work. The guy at the tool supply shop agreed. After all, a hammer drill provides plenty of grunt. I bought and tried the fancy hammer drill bit. And it didn’t do any better than the others. Obviously, brute force wasn’t going to work either.

Hello there….I just thought I’d drop you a line commending your products. The 6,5,4 and 3 mm drill bits work a treat on my stainless steel cycle rack. Initially I ran the drills too fast and I didn’t use enough pressure which resulted in poor performance, particularly on the larger drill sizes. I quickly learned that slowing the drill down and increasing drill pressure whilst ensuring enough cutting grease had been applied enhanced the drilling performance immensely. It used to frighten me when drilling stainless steel. NOT ANY MORE! Well done your Company!

Best drill bitsfor stainless steel

Best drill bits I’ve ever used by far, I purchased several different cobalt bits trying to drill into a broken cylinder head bolt to extract it and not one would do more then scratch the hardened head bolt. After hours of trying to drill into the broken bolt I decided to go online and find a different type of bit, after watching many videos about these bits I decided to purchase a full set with their ‘in house lubricant’ as well. Within 10 mins I had the broken bolt drilled and extracted, I’ve never seen a bit cut hardened steel that effortlessly before, I am a life time customer from here on out, worth every penny. Thank you

Thanks for sharing your journey in finding the right drill bit for hardened steel. It’s surprising that the solution was a bit designed for granite tile! Do you think the success of this drill bit is due to its specific design or the material it’s made from? And do you foresee any long-term wear issues with using it for hardened steel repeatedly?

I highly recommend you try one if you have to drill through hardened steel. For a closer look at the drill bit selection I went through in the process, check out the accompanying photos.

Thank you! This is the info I was looking for after having unsuccessfully tried to cut through hardened carbon steel in every possible way. I also tried a plasma cutter on very low current in order to punch that damn hole, or at least the beginning of it, but no way – even a slightest steel residual in the hole basically makes it impossible to drill through it with every bit I own. I will try the granite bit for sure.

After that, my options were to package the part and send it to a specialty shop for EDM (Electrical Discharge Machining) to accurately arc-machine the hole for $200, or to buy different 1/8-inch drill bits and try again myself (using each of the three drills used before).

The second bit I tried was titanium-coated. The guy at the tool supply shop said it would absolutely, positively, 100-percent drill through hardened steel. It even said so on the package. Both the tool guy and the package were wrong. It didn’t work.

This is Wayne Winton with Tri County Locksmith Service. I have used the TTP-HARD-drills and personally feel they are some of the highest quality drill bits I have ever used. They work well on a variety of  steels from hardened spring steel to brass and aluminium, all with fast cutting speed and easy drill point starting. They are far superior to the average drill bits that can be purchased at the local hardware store. They have put much time and research into their product and it shows in pure performance. These drill bits are in my service truck and will be for a long time.

The steering column was a three-on-the-tree assembly converted to a floor shift application with a new bowl, but parts of the shifter linkage remained. The idea here was to trim the remnants off and then drill a hole in what was left so that it could be safety-wired shut.

Worked like a charm. Nothing made a dent in the hardened galvanised steel. I had to drill 22 holes and still going strong.

He dragged a file across the linkage and quickly came to the conclusion that the steel was actually hardened (and not so much by me). Next, he annealed it with a TIG welder.

Found this post while researching drill bits that will go through metal. I had an experience like this yesterday. Tried every bit I had to no avail. Then I found this bit we used to drill through ceramic tile. It was really beat up and looked horrible but I tried anyway and it did the trick. Went where no bit had gone before. I need a new one because I have a lot more holes to drill and I messed that bit up drilling through the tile.

They are amazing. Didn’t believe the hype, but it appears to be true. I am a locksmith and drill hard plate on safes. They really tore into it.

Worked great on my cast iron piece. Had no luck w titanium or conventional carbide tipped bits that I tried and broke or dulled. Even tried Dremel with diamond cutting tips to no avail. The stone/tile worked great, following the drill bit mfr instructions to use hammer drill at high, not low, speed- which was totally different than what I’ve read widely. Thank you so much for this valuable tip.