Diamond Core Bits

Several construction workers in the construction industry have asked repeated questions bordering around diamond core bits, what materials they can be used on, sizes, how to select the most suitable core bits, among others.

If you are reading this, you are most likely considering using diamond core bits soon and you need to learn about them before you do.

Not to worry, in this article, you will find all the information you need to know about diamond core bits. Take your time!

#1. What are diamond core bits? What are diamond core bits used for?

Diamond core bits are drilling materials largely used to drill holes on various substances including concrete, block, shells, asphalt, brick, stone, glass, wood, ceramics, floors, walls, pebbles, bones, etc. Mind you, diamond core bits are not restricted for use on hard surfaces only. They may as well be used on soft and sensitive materials. You only need to be sure you’re using the right size and that you’re using it the right way. It is also important to note that diamond core bits have holes useful to remove debris while working and to ease out water. Learn more as you read on.

#2. Electroplated and Sintered diamond core bits: Which one should you use?

These are the two main types of diamond core bits. While the Electroplated drill bits have one layer of coating on the steel shank, Depending on  manufacturer diamond core bits may also have multiple layers. This implies that as soon as the diamond jacket of the electroplated bits has worn out, you have to replace it with a new drill bit. This is however not so with sintered core bits which have many layers and can therefore last longer. All you have to do is clean with an aluminum oxide rock before and after every use to expose a fresh diamond coat and you’re good to go! Whether you choose the electroplated or the sintered core bits depends on your budget and the work on ground.

#3. Diamond Core bits are available in different sizes

Because they are used on various surfaces and materials, core bits appear in different sizes to suit your specification. They typically range from small sizes such as 0.75mm, 1mm to 3.5mm and very large sizes such as 60mm and above. While the small sizes (1mm or less) are best used on surfaces such as small precious stones and other jewelries, the average sizes (3mm or 3.5mm) may be used on ceramic plates and tiles, and the large sizes (60mm or above) may be used on rocks and asphalt. Whatever size you select, ensure it fits the material you wish to work on so as to avoid fractions. Diamond core bits also come with shanks. The shank is the end that goes into your drill. Ensure you get the accurate size.

#4. How long do Diamond Core Bits last?

Apart from the fact mentioned earlier that sintered diamond core bits generally have a longer lifespan than the electroplated ones, the durability of your core bits depends mainly on lubrication, the density of the substance you’re drilling, your speed and pressure. We recommend that you use water for lubrication and ensure that you regularly lubricate. Keep your pressure and speed to the minimum and ensure that the size of your core bits are appropriate for the nature of the material.

#5. Be slow and easy

Finally, here is one important rule attached to using diamond core bits. You don’t want to fracture your material in the process so you have to be as slow as possible. You might want to increase the speed a bit when the drill is fully inserted, but make sure it is reduced again towards the other end in order to give you a fine drilling surface.