Have you ever had the pleasure of working with Granite? If so, the chances are that you would definitely know how nightmarish it could be to drill through that stuff in one piece. To chew through something that hard and tough, you would need something strong, something versatile, something that could really take a beating – you would need something like a custom-made best diamond drill bit for granite. In this article, I am going to introduce you to a bunch of diamond tip drill bit for stone models that are clearly going to answer the question “What is the best way to drill through granite?”
Granite can be a very tough thing to crack, especially if you aren’t using tools that are custom made for it like Dremel diamond bits for stone and the likes. Normal drill bits can somewhat get the job done – I assure you, however, that’s only viable if you don’t really mind chewing through all of them in a fortnight or less.
What I am trying to say is that, if you are going to drill in to granite using a concrete drilling machine, there is no real way to get around the fact that you would need to invest in a set of good diamond coated drill bit models or diamond drill bit set that are better suited for the job. In this review/buying guide on the best diamond drill bit for granite models, I am going to let slip my takes on the absolute best granite hole cutter and drill bits variants you can buy right now.
The Best Diamond Drill Bit for Granite vs. Tungsten Carbide for the Same
Let’s face it, a good set of the best diamond drill bit for granite can be a rather expensive thing to own. However, when compared with its less durable tungsten carbide or cobalt alternative, the diamond coated ones can easily seem like a better deal all around
For one: a diamond drill bit for granite can last a lot longer than any of its other alternatives like carbide or cobalt made ones. Coated with naturally occurring carbon crystal, the diamond core bits for granite drill tops are obviously much stronger and can withstand abrasion and heat much better than any other man-made hard bit models can.
Moreover, the overall aesthetics and finishing that you would get with a best diamond drill bit for granite will hugely be better than any other tool or bit you can think of. The lines would be crisper, the edges sturdier and the chances for chipping too would be on a bare minimum level.
Secondly, the best diamond drill bit for granite can be used to drill through a wider array of materials and surfaces than any other can. From steel to glass, wood to marble, and ceramic to tile, there isn’t really a place where these drill bits aren’t useful or effective.
Diamond Tip Drill Bit for Stone and Granite:
The Best Models to Buy in 2022
Diamond Drill Bits for Rock and Granite
Cutting a hole through a piece of granite or rock can often be a hard and dangerous thing to do. Chipping is always a concern, and jamming and overheating can also affect the performance and longevity of the drill bit in question. Here are a few best diamond drill bits for porcelain tile models that are perfectly suited for the said role sans any major complications.
#1 Neiko 00823A
Diamond Grit Hole Saw Drill Bit Set, 5 Piece | 5/32” – ½”
Sporting a diamond topped tip that is ultra-durable and long-lasting, the best diamond grit hole saw drill bit set is an excellent option that is well worth considering for its awesome cheap prizing and uncharacteristically great set of merits.
It is punched with a side hole for easy slug removal. This industrial looking 5-piece drill set comes with rather convenient nickel plating on its body to better increase its longevity and durability. The cutting edge is pretty sharp, and the specialized diamond coating can make grinding a less cumbersome experience than it really is.
A set of five, the drill bits are rather versatile in size, and since they are made using universal standards, the problem of not fitting will simply never be a factor with them. With a cutting depth of ¾” and ¼” shank, these drill bits are perfect for jobs where precision and speed shares the same equal importance as each other.
Pros
- Nickel-plated steel frame
- Super tough diamond coated edge
- A punched hole for easy slug removal
- Convenient cutting depth of ¾” and ¼” shank
- Comes in 5 different sizes
Cons
- Slight heating problem
- The diamond dust is temporary
#2 BLENDX Diamond Drill Bits
Glass and Tile Hollow Core Drill Bits Extractor Remover Tools
Electroplated to enhance its durability, the Blendx diamond drill bit for granite and glass comes with a sheen that may not really expand on how good its edge and performance is.
Designed specifically to suit low drilling speeds better, these doled up diamond core drill bit for glass is perfect for all those delicate tasks where precision and finesse matters the most than sheer power.
The sealed shanks may add a bit of heft to its drill bits. However, the extra wide lubrication and slug removal holes really add a nice bit of convenience to this wholly steeled up thing.
Pros
- Well-forged Electroplated shell
- High precision diamond tipped edge
- Cored up drill bit for better stability
- Extra wide slug removal holes
- Anti-slick drill top
Cons
- Slightly pricey
- It’s a bit heavier than normal
#3 Drillpro 10 PCS Glass Hole Saw
Tiles Glass Ceramic Marble Bottles DIY,6mm — 30mm
Unlike Granite where brute force and simple power matters, drilling holes in porcelain tile and glass can often be a very rather hard thing to do because most of the normal drill bits of today aren’t really custom made for it and they also usually lack the certain finesse needed for it.
This 10-pieces diamond drill bit for granite set from Drillpro comes with a diamond coated head that is super precise and ultra-durable. The fine diamond dust embedded in it act as an abrasion unit, and its perfect for cutting out clean lines from delicate materials such as glass and tiles.
As a budget offering that sticks to the basics, the Drillpro diamond drill bit for granite comes with a side-punch-out for easier and quicker slug removal. As I mentioned before, this particular set relies more on abrasion than anything to get the job done.
Therefore, the drill bit can become quite hot when it is pressed for prolonged use.
Pros.
- Diamond dust integration
- Nickel-plated frame
- Rather big 10-piece set
- Universally adaptable
- Punched hole for easy slug removal
Cons
- The diamond dust may not last long
- Constant lubrication is a must
Diamond Tip Drill Bit for Tile, Glass, and Others
Drilling up a rock is one thing but trying to do the same on the glass will require a game that has to be played on a whole other level.
Spear Head bits and diamond tip drill bits are perfect to make holes in hard, non-wood, breakable surfaces. It includes tiles, glass, marble, porcelain, etc. The spear head bits are made of tungsten carbide. The diamond drill bits are much helpful to deal with it. These bits are embedded with pieces of diamond in it. Hence, it gets extra power for smoother cutting.
However, the diamond drill bit lifespan would be lesser as its coating wears away quickly.
Anything, while drilling glasses, lay it flat on a soft cloth for grip and support. Also, drill at low or minimum speed to avoid breaking.
Here are a few of my favorite diamond drill bits for granite that I think is rather ready to ace that said the game with top scores..
#4 SQB-15 pcs Diamond Drill Bit Set
Extractor Remover Tools for Glass, Ceramics, Porcelain, Cermic Tile
Made from industrial grade carbon steel with a nickel-plated body to prevent corrosion, the SQB set of diamond drill bits can be summed up in just one word: Awesome! Designed specially to chew through glass, marble, and granite, the Thicken corundum coating on the tops offers superior cutting strength for neat, fast drilling outcomes.
Crafted from high-grade stainless steel, the drill bits have enough durability to handle “impact” action, making it ideal for break down stone materials. Each drill bit has a hole on the side that prevents the accumulation of dust and debris. It also helps to keep the drill bit cool, as it easily lets in lubrication for a smoother, heatless drilling action.
In our testing, these hardened drill bits performed considerably well, even better than some of the other entries in this list itself. Coming to the size of the drill bits themselves, they range across 0.24″, 0.32″, 0.4″, 0.48″, 0.55″,0.63″, 0.11″, 0.79″, 0.87″, 0.98″, 1.02″,1.11″, 1.18″, 1.57″, 1.97″
To cite its flaws, these drill bits are recommended to be only used within 800 to 1000 RPM’s, which makes cutting fairly slow. But when it does work, it works awesomely. The cuts are neat. No scratches and no shattering. You can also use these drill bits to chop up tile, porcelain tile, ceramic tile, brick, and stone.
Pros
- Premium build
- Super sharp, durable corundum edges
- Pretty big 15-piece drill bit set – perfect for cutting through the glass, marble granite, ceramic, porcelain, bricks, etc…
- Wide lubricating and slug removal holes
- Long-lasting
Cons
- Requires constant lubrication for optimum, sustained performance
- Feels heavier than normal
#5 Drilax ® 10 Pcs Diamond Drill Bit Set
5/32″, 3/16″, 1/4″, 5/16″, 3/8″, 1/2″ , 5/8″ , 3/4″ , 7/8″ , 1″ In Inch
I know that fashion isn’t something that needs to be considered when looking for things like a set of the best diamond drill bit for granite. However, a glance at these beauties and I swear that you will be floored by their shiny mawkish charms and giddy finesse.
At 19.45$, this particularly handsome set of drill bits isn’t really the cheapest of the lot. However, for its slightly expensive stature and garish persona, it really brings a lot to the table like cored center shanks, slug holes, diamond dust coated edges and nickel-plated polished shell.
Designed for the more delicate tasks and missions, this set of the 10-diamond drill bit for granite is perfect for drilling through weak materials such as glass, porcelain, marble, and tiles.
Pros
- Sleek, shiny nickel-plated shell
- Tough diamond dust edge
- Crossed edges for better gripping
- Wide lubricating and slug removal points
- Cored shank for better control and stability
Cons
- Slightly expensive
- The shine may fade over time
Best Diamond Tip Drill Bit For Metal
Designed to breeze through metal drill bit like its nothing, these high precise best diamond drill bit for granite models are indeed a somewhat reliable tool that needs to be on every self-respecting man’s arsenal. Here is a great one that really captured my imagination and has been doing so for the last few years.
#6 Genround 15 PCS Hollow Core Drill Bit
Set for Ceramic, Glass, Porcelain Tile Diamond Hole Saw
It is made from high strength carbon steel with a smooth nickel-plated surface. This rather handsome glass tile drill bit comes with a set lower resisting force that has been tuned to the minimum to make it easy to drill ultra-precise holes in a matter of Seconds.
Coated with high-quality diamond, the edged hole-saw efficiently creates a high precision, smooth cut that literally leaves no chipped edges or cracked ends.
The shanks are not hollow. Therefore, it brings with it a light level of heftiness that may or may not be your cup of tea depending on what your preference is. With a pack that comprises 15 different sizes, the Best Diamond drill bit set is undoubted, the most value for money offering we have seen here today.
Pros
- Sturdy and strong plated shell
- Cored shank for better strength
- Fine diamond dust based edge
- Rather a voluminous set
- Heat resistant end tip
Cons
- The plating may lose its sheen over time
- The tip needs constant lubrication
#7 1/2″ Inch Diamond Drill Bit
Cutting granite can be tricky. Without the right sharpness and strength, the drill bit could break or shatter, not to mention the dust storm. This 4-piece drill set from NewsFana aims to fix these problems with two extra perks: a nickel-coated outer layer for durability and increased diamond dust for sharper, hammer ready action.
So, how it fairs? Awesome actually. The toughened frame holds up well against hammer action, and the edges followed suite. With proper lubrication, the cuts were clean. Dust production was noticeably low, and chippings were kept to a minimum. One thing we noticed was that the slug removal holes were a bit on the smaller side. But considering the overall package, it’s not exactly a deal-breaker. As for dimensions, each best diamond drill bit for granite is rated as 12 mm with a 1.2-inch long shank. You get 4 extra spares in the kit.
Beyond granite, we tried it on glass, ceramic, and even glazed pottery with similar results. We loved the copper-ish color. Can they be used for hammer drilling? From our testing: yes, you can, but with medium speeds.
Pros
- Hard, electroplated steel build
- Double coated Diamond dust edges – perfect for everything from glass to granite or even hard ceramic
- Universally supported bit sizes
- Corrosion-resistant
- Gorgeous copper sheen
Cons
- Not suitable for heavy hammering needs
- Small slug removal holes
#8 Diamond Drill Bits, Baban10Pcs Hole Saw Diamond Drill Bit
Beauty and brawn – this stellar set of diamond drill bits from Baban has it all. The anodized, molded steel frame offers extreme toughness for drilling granite, whereas the diamond dust coated edges offer the finesse for cutting glass.
Personally, from their look alone, we were sold. The chrome-like sheen is eye candy, and the polished layer helps to reduce friction (read: heat). The diamond dust coated edges are pretty even here, which is a rare sight with budget bits. We tried them on a few glass bottles, and the holes all came out good – no shattering or chipping. What about granite? Well, it was adequate. With ample lubrication, the drilling experience was excellent.
The side holes did a great job keeping the heat under control & boosting airflow. That said, we wouldn’t recommend them for a hammer drill, though, as the edges can wear out faster.
In the kit, you get 10 drill bits ranging from 6 mm to 32 mm, with appropriate shank lengths. For the price, that’s a lot. Besides glass and granite, you can also use stones, ceramics, bones, antlers/fossils, glazed pottery, etc.
Pros
- Tough, abrasion proofed steel build
- Precision diamond dust edges with increased sharpness
- A ton of ports for easy slug removal and lubrication
- Sleek, glossy looks
- Cheap yet you get 10 drill bit pieces
Cons
- In smaller bits, the diamond coating is a bit uneven
- Gets too hot too fast
#9 uxcell6mm Diamond Tool Drill Bit Granite Tile Glass Hole Saw 12 Pcs
With an extended shank for drilling deeper into granite, the Uxcell 6 mm diamond drill bits are perfect for quarry workers and artisans to whom precision matters. For durability, they’ve plated it with nickel, and have used a segmented design.
On the edges, we get a multi-layer AAA diamond dust coating that promises (and delivers) enhanced sharpness & fidelity. We tried it on a few granite pieces & the results were excellent, to say the least. The cuts/holes were all fairly neat.
The speed, too, was quite phenomenal (though lubrication was a must). We did notice a little bit of “catching” at lower RPM rates, but it’s quite negligible & certainly is not a deal-breaker. One thing that we appreciated with this drill bit set was how big the slug removal holes were on them. Etched deep near the blade edges, it made lubricating every best diamond drill bit for granite easy as well.
The makers claim that it can cut glass beautifully. With the longer shank, it can be tricky (we found that out the hard way).
Pros
- Nickel-plated, segmented design
- AAA-rated, multi-layer diamond dust coating – super sharp and super tough
- Fast cutting speeds
- Hammer action-ready (on medium settings)
- 12 units in one pack
Cons
- For non-experts, the drill bit can be a bit harder to control
- The sheen is easily lost
#10 Jashtool Diamond Drill Bits
Just shy of $20, the “Jashtool” Diamond drill bits are expensive. But trust us, they’re definitely worth the extra cost – and how! It is extremely durable for starters, thanks to the triple electro plating imbued on to its outer shell.
With a wide triangle shank for increased gripping, the drill bit runs super fast. It’s quite well balanced. And has segmentation for extra toughness – making it ideal for hammer drilling. For heat dissipation, the drill bit contains wax, which melts with the heat and helps control the heat and act as an extra bit of lubrication. On the business side, the diamond dust tips are multi-layered & are sharpened to perfection.
In all our tests, it chewed through concrete like it was nothing. The same goes for granite & glass as well. It performed effortlessly across stones, fossils, ceramics, and even carbon fiber.
The one we have reviewed here is the 6 mm variant. For the same price, you can get the 8 and 10 MM variants as well. You get 3 drill bits per pack.
Pros
- Triangle shank for better grip
- Nickel-plated, durable steel construction – heat and abrasion-resistant + hammer ready
- Super sharp, diamond dust coated tips
- Wax infused shank for better thermal dissipation & lubrication
- Large slug removal holes
Cons
- Only works with certain drilling rigs
- Costly
Designed to chew through granite-like its butter, Diamond drill bits can be a pretty awesome addition to your everyday tool kit. That said its costly investment. So, it is understandable you may have a ton of worries about them.
To help set the record straight, here are some of the frequently asked questioned about these diamond drill bits & their answers.
Enjoy;
1) Hey, do these best diamond drill bit for Granite really feature real diamonds?
No, they do not. Often featuring a mix of tungsten, carbide, and diamond polycrystalline, these drill bits mostly have the same integrity of diamond, hence the name.
In other words, they do have a bit of diamonds in them. But not so much it’s worth having the former’s name on it.
2) How long these drill bits last?
Though it depends on many factors, an average diamond drill bit can definitely last up to 1200 holes, with pricier ones offering 2000 holes or more.
3) Can they handle hammer action?
We don’t know about other models. But for the ones we have featured above, they are all hammer action supported.
In fact, some of them even offer reinforced teeth to make the action more reliable & punchy as possible.
4) Do they still need lubricant?
Yes, always! They may be strong, but as far as heating goes, they are as bad as other drill bits. Therefore, if you want a clean, cool cut, a bit of lubricant will always be a nice option to have, even more so with metallic objects.
5) Aside from cutting Granite, what else can I use it for?
Strong as a diamond, these super tough drill bits can also be used for drilling holes through the porcelain, glass, stone, marble, etc…
In fact, you can even cut through sapphire and ceramic with them. Assuming you’re ready to chew through a spare few bits, that is.
Final Thoughts
Drill bits – they are an interesting bunch, aren’t they? Regarding sheer quality, performance, durability and overall value, pretty much nothing that I have used over the years has really compared to the ones I have featured here. Offering a set of crisp, sharp teeth that can bite into even the hardest materials out there, these high precision drill bits will definitely last for years before they need or replaced.
In any way you look at it, these drill bits are an addition that needs to be on your tools collection, and it is literally an absolute must if you are planning on doing some hard granite or metal drilling.
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