Hollow-core diamond drill bits are quite handy when it comes to making holes in hard surfaces such as porcelain, marble, granite, glass. Diamond drill bits derive their extra drill power from the embedded pieces of diamonds.
Users should also know the subtle disparities between diamond drills and hollow-core diamond drill bit types, their uses, and how they affect performances.
In this article, we will be discussing some tips as regards selecting hollow core diamond drill bits.
Figure 1 – Diamond drill bits
How to select your hollow core diamond drills
Purchasing the wrong diamond drill bit can be quite a costly mistake as you’d incur needless expenses. The tips we will be reviewing can also double as a buying guide to help you make the right selection –
Table of Contents
1.Choosing a diamond drill bit that suits your material
The material or materials you are planning to drill plays a significant role as regards selecting a hollow core diamond drill bit. This sole factor goes a long way in deciding the equipment and accessories you will be able to use. Drilling ultra-hard materials like alumina, sapphire, metallic materials, hard ceramic materials, or other precious and natural stones, will require you to use a sintered diamond drill bit (metal bonded).
On the other hand, if you intend to drill subtle and less-expensive materials such as soft stones, tile, glass, composites, and the likes, then an electroplated diamond drill (nickel bonded) can be quite handy in this regard. As a good rule of thumb, harder materials tend to require a softer bond, while softer materials do well with harder bonds as it makes them last longer.
You should also consider the expensiveness of the material in question. If you’re looking to drill an expensive material, then your diamond drill bit will play an essential role in your drilling operation. In this regard, expert masons advise that you obtain a thin wall diamond core drill as it reduces material loss and deformation.
Figure 2 – A drilling machine drilling a hole
2.Select a diamond drill bit that can serve you for long
The life of your hollow core diamond drill bits depends on a host of factors – lubricant, speed, pressure, and the density of your material. However, we may not know the material you’re planning to drill, but we know that electroplated diamond drill bits won’t perform well in this regard. Yes, they may cost less, but they are likely to cost you more in the long run, and we will tell you why.
Depending on your application and materials, metal bonded diamond drills will outlast 15 electroplated diamond drills put together. Instead of switching your diamond core drills on and off, metal bonded drills allow you to save time and money by using a single drill.
Plus, electroplated diamond drills tend to have a single layer of diamond coated on a metal core, which allows the diamond to sit on the surface. If the diamond-coated partially is worn, the diamond drill starts lagging, start drilling to the side and not straight, or would probably stop working totally.
On the other hand, metal-bonded core diamond drills have pieces of sintered diamonds and multiple layers of diamonds inside the metal matrix. With this, the metal-bonded core diamond drills wear evenly. It also makes them dependable.
Figure 3 – A cordless screwdriver
3.Purchasing a multifunctional drill bit
Most handymen or masons with little budget tend to purchase a hollow core diamond drill bit that they can use on a variety of materials. It is advisable, especially when you aren’t able to purchase different tools such as diamond drill bits for glass or diamond drill bits for stones. However, you should understand that if you’re looking to get a universal drill, you are likely to incur more expenses in the long run as your drill bit might wear faster due to constant use.
In this regard, we recommend that you purchase a universal drill bit from a trusted manufacturer so it can serve you longer.
4.All diamond drills don’t come with similar tips
You can use diamond drills to drill holes, but these holes tend to differ. Invariably, this indicates that diamond drills come with different tips/bits. We will be looking at the common bits most diamond drills are likely to come with –
Figure 4 – Different drill bits/tips
High-Speed Drill Bits
As the name suggests, this drill bit happens to operate at high speed. However, anyone with a drill bit will undoubtedly have a high-speed drill. This drill has a twisty piece that takes the shape of corkscrew pasta. You can use high-speed drills for basic drilling applications such as making small holes in walls, wood, plastic, and the likes.
Brad Point Bits
Brad-point drills have a reputation for being hyper-precise. Also, they allow you to make clean holes as they come with rubber stoppers that ensure that you don’t drill deeper holes than you want to. Due to their high precision factor, masons use them for woodworks.
As you might have guessed, masonry bits do well for masonry jobs. They come with optimized tips you can use to work on hard materials like concrete, stone, brick, and the likes. Due to their usages, masonry bits don’t last quite long, why? Well, it is because the process of drilling into a hard material like brick or concrete can generate so much heat, which can cause the tips to melt.
The volatile nature of masonry drilling demands that you follow a specific recourse for safety reasons. You should also be wary of your RPM output, and don’t forget to regularly lift the drill from the material to lessen the risk of overheating.
You can refer to rivet bits as a hyper-specialized tool accessory. You can use them to drill short rivets in thin sheets of metal. Rivet bits have limited functions. However, if you need one, then you can’t help but get one.
Spade bits don’t make the best of holes, but you will find them handy. You can use spade bits to drill rough holes in softwoods, which is almost the only material you can use. The primary function of Spade bits is to facilitate running cables.
5.The speed factor
Speed is one of the crucial factors to consider when selecting or purchasing a hollow core diamond drill. You can determine the speed of a diamond drill by the RPM output, check the product manual for this. You should also understand that your working speed is entirely dependent on the material in question. Some materials don’t perform well with speed, especially tempered glass and other delicate objects. In this regard, you should endeavor to set your RPM output according to the hardness of the material you’re drilling.
Where can you get quality tools?
If you’re a handyman or mason looking to improve your work life as regards quality tools and convenience, we recommend that you patronize NC Cutting Tools for your quality tools. NC Cutting Tools manufactures a wide array of diamond cutting tools that you can rely on for your work activities. On the good side, these tools usually stand the test of time as you can use them multi-functionally on a variety of materials.
Frequent Asked Questions
What are the available hollow core diamond drills?
There are numerous diamond drills available on the market. Each hollow core diamond drill available is specific to a particular material. We have diamond drill bits for metal, diamond drill bits for stone, diamond drill bits for glass, and the likes. If you wish to know more about the available diamond drill bits on the market, kindly visit NC Cutting Tools.
What materials can you drill with hollow core diamond drills?
Hollow-core diamond drills come in a range of varieties, which means that you can use them on a vast range of materials. Regardless of your material, you can easily purchase a hollow core diamond drill for any specific material at NC Cutting Tools.
Where can I get the best hollow core diamond drills?
You can get the best hollow core diamond drill at NC Cutting Tools. NC Cutting Tools have a reputation for manufacturing the best diamond drill bits, as well as other diamond cutting tools, on the market.
Figure 5 – Drilling a tiled wall
Endeavour to employ the tips above when purchasing or choosing a hollow core diamond drill bit as they will keep you from incurring needless expenses. However, if you wish to be sure you’re on track as regards tool selection, then we recommend that you purchase your hollow core diamond drill bits from NC Cutting Tools as you will be in safe and expert hands.
Visit NC Cutting Tools to learn more about quality, hollow core diamond tools.