Diamond Drill Bit

Most the materials we have today for which we need to drill holes are glass, tiles or concrete. These are hard materials unlike wood which is not that hard, the most appropriate drill bit is the diamond drill bit. However we need to be very cautious of how we approach drilling a hole into these materials.

Diamond is a hard material which is used nowadays in the industry for drilling holes into the hard materials I mentioned above. The diamond drill bits have diamond on the tip of the drill bit either sintered or bonded. Here is my step by step guide to use the diamond drill bits which will help reduce the damage to the drill bits thereby reducing your cost of procurement of these drill bits.

Now two things, which we will focus on while we learn how to use is the speed of the drilling tool and the other is preventing heat from damaging the tool.

Diamond drill bits are always to be used at slower speeds as fast speed can damage them and also generate more heat. The optimal speeds are 700-1000RPM.The speed can vary based on the overall diameter for example for 6mm you may have the speed at max 2000 RPM.

The next important step is to keep the drill bits cool by use of water. The water will help the drill bit being cooler while the drilling action is going on and also remove the debris of the drilling action as well as help in lubrication. Try using the washing up bottle or any other mechanism to pour water directly onto the surface being drilled.

Slowly and steady wins the game and that applies to your drilling action. Start slowly, tilt the drill bit to scrape the surface a bit and then do the drilling action in a more vertical fashion. The best is to
have template or support on top of the surface being drilled as that will help you prevent from slipping and will gain more strong hold onto the drilling action.

Lastly use gentle pressure to drill and then do a repeatable action of drilling a bit and then taking out the drill and let water do its lubrication. Repeat this process till you find that you have completed
the process and drilled a proper hole.

Diamond drill bit can be used to cutting holes in the materials like glass, marble, limestone and slate. Within glass it can used to cut the glass jars or stained glass. Diamond drill bit or the diamond core drill bits are the best when you need to use on the new generation materials like the ceramic tiles or
stained glass.

The way it works is that it creates a hole is that the drill bit is actually hollow from the center and hence when you drill it will create a hole which the size of the drill. The size varies from 5/64″ to 4″.
The size of the shaft has to be a standard is 3/8″ so that it can be used in the drill.

However, if you are looking for some special purpose diamond drill bit for example say drilling hole into glass then the diamond drill bit needs to be a bit blunt from the front. The other thing is that they
will operate more slowly than the regular diamond core drill bit. The blunt diamond drill bits have diamonds on the tip and on the side whereas in a core drill the diamonds are at the sides since they do not have a tip.
The way the diamonds are attached to the tip is in two ways one is sintered and the other is bonding. In bonding the diamonds are attached to the drill tip using the electroplating bonding process.

The diamond drill bits as a matter of precaution or rather rule should only be used with very slow drills so that the impact of high drills does not destroy the drill bit or the material. The other important thing to know is that the drill pressure has to be very low too when
using the diamond drill bits.

The material used for Construction of Drill Bits a primer.

The drill bits for use any drilling need to be hard enough to withstand the enormous of heat generated while drilling and the type of construction material used depends on the kind of material being drilled
into.

The most common material used for making the drill bits is steel. The type of steel used in the construction can vary based again on the usage of the drill bit. Soft low carbon steels are used as a material when we need to drill hole into wood. This is the most common type of drill
material and less expensive. The other steels used are the high carbon steels and high speed steels. The major benefit over other type of steels is that these can withstand heat better. The other common type is cobalt steel since it can retain it’s hardness at high temperature.

The next material which is being used nowadays is the tungsten carbide steel. This material is very hard and can be used in almost all the situations but since it is costly, pieces of  it are wither either
screwed or brazed on the drill bit. The other material used is PCD or poly crystalline diamond which is very very hard and can be used for almost any type of drilling work.

The next thing is that is done for the drill bits is coatings. The coatings again are done based on the use of the material being drilled. For the diamond drill bit the diamond powder is used as an abrasive for cutting stone, tile and other materials. The diamond coated bits generate large amount of heat and have to be cooled during their use.