10 Things You Should Know about Diamond Drill Bits


Here are the 10 things that you should know about diamond drill bits which are manufactured by drill bit manufacturers – 

  • On what materials diamond drill bits should be used on:

Diamond drill bits are perfect for jewelry making purposes or precision holes in precious stones For these stones there are small diamond drill bits available with a solid flat end, or tip. And also used for drilling holes through hard material like:

  • Very hardwood 
  • Glass, sea glass, fused glass, etc
  • Shell, antler, bone, fossils
  • Stones, gemstones, pebbles, rock
  • Ceramic, porcelain tiles, plates


  • Diamond core drills:

You should use water as a lubricant and coolant with all diamond drill bits. It allows the water to flow up inside and around the inner core of the drill bits as you are drilling it as being hollow, which helps keep the drill bit cool and remove the debris. 

  • Difference between sintered and electroplated or coated diamond drill bits and burrs

Electroplated or coated diamond drill bits use nickel in a single layer, which won’t last for as long as sintered, but they are cheaper and can be used as an alternative. 

Sintered diamond has several layers of diamonds bonded to the matrix at very high temperature and by dressing or cleaning with aluminum oxide stone will help maintain the life of a drill bit or burr, revealing a new layer of diamond every time. 

  • Holes one drill bit make and how long will it last:

A diamond drill bit’s lastness depends on factors like speed, lubricant, and density of the materials used. 

The holes a drill bit makes depends on the glass to be used, such as from sea holes 250 holes can be achieved from one drill bit, and with China plates, you can drill 15 holes a bit. 

  • How to Attach Diamond Drill Bits to the Drill :

Smallest range of a drill bit ranges from 0.75mm to 3mm, which will not fit into a rotary drill or DIY drill without the appropriate chuck to hold them. 

Dremel collet nut kit and Dremel multi chuck are the tools to do a couple of attachments that will fix your drill, which includes two small diamond bits and two small core drills. 

  • Problems with Overheating, Speed, and Pressure :

Your drill bit should never be too hot to touch or even warm, and if it is or you smell burning, please back off! The reason for this is either your speed is too high or the pressure applied is too much. 

The starting speed of the drill should be at the lowest and further increase it as it goes through your material. 

  • Is it safe to drill near water:

It is quite obvious that extreme care should be taken off while using the drill near water. 

Wear goggles and protective wear while drilling any kind of material to prevent any kind of flying bits of debris that causes injury. 

  • How to Drill a Hole in Glass, Stone, Ceramic, etc.:

You won’t be able to angle the drill if you’re using a drill press or bench press but can hold your material in place with a vice. 

Angle your drill to start off drilling if you have problems with drill bits skittering across the surface of the material. 

You can drill in a vertical position as soon as the initial hole is made. 

  • Can Tempered Glass be drilled:

No Tempered glass cannot be drilled; you end up having a cracked glass, so please don’t try it. 

  • Core Drilling Bits :

Despite their name, it intends to make a hole rather than reaching a core. Many scientists and artists use it to extract a core of fossil, let’s say for DNA testing and do so with great success. 

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