Features of choice
Before buying the desired model of tubular drill, it is better to pay attention to some rules for the selection of such building parts. So, first, decide for which materials the tool will be used.
For drilling in various glass structures that have significant strength and hardness, it is recommended to purchase models with a ball-shaped tip.
If you plan to take a sample for processing metal, concrete, rubber or wood, then you should pay attention to the size of the products, including their diameter.
If you often perform all kinds of installation work with various materials, then it is better to immediately buy a set with all types of tubular drills. You can also purchase a universal model of this tool .. Otherwise, defective drills not only will not be able to make high-quality and even grooves, but will also spoil the material itself
Otherwise, defective drills will not only be unable to make high-quality and even grooves, but also spoil the material itself.
Varieties
Tubular drills are of different types. So, depending on the material for which these elements will be used, they can be divided into tools according to:
- tree;
- ceramics;
- metal;
- concrete;
- glass;
- paper;
- rubber.
Tubular drills can vary significantly from each other and depending on the shape of the shank. The main ones include the following models.
Cylindrical drills. This option is considered the most popular. Models of this type are made of high quality steel (high speed, alloy or carbon steel). Cylindrical varieties are often used for drilling various metal parts. They are great for a regular drill, so this option is good for DIYers. Cylinder shanks generally have the same diameter. But there are also stepped models. These tools are firmly enough to hold in the chuck, in the process of work they will not go to other directions.
Tubular drills can also differ in the design of the cutting part. There are 2 main types in total.
The working part is in the form of a hollow cylinder. These models allow you to create smooth circular indentations in a variety of materials. The diameter of this part and the diameter of the shank may or may not coincide. These samples for drilling require significant physical effort in the process. Most often, the diamond coating is not applied to the entire working part - it is treated with a small segment, which is directly involved in the drilling process. As a rule, on the surface of such drills there are small holes through which the chips formed during operation are removed.
They have a special tip in the form of a small metal ball, on the surface of which cutting teeth are placed.
Such models are most often used for processing glass surfaces. In the process of work, such drills will not move to other sides. Many varieties are available with a small diameter tip that makes it easy to make small holes in the glass that will hardly be visible. During manufacturing, the tip is also coated with a special diamond coating.
Terms of use
Before starting work, the drill shank must be firmly fixed in the tool holder. Make sure that it is attached to it as tightly as possible, otherwise, during the drilling process, the product may simply shift to the other side and damage the material.
In the process of drilling, remember that the speed of rotation of the drill will directly depend on its diameter, as well as on the type of surface to be machined. In this case, the smaller the value of the diameter, the higher the speed can be set.
When installing, do not forget to promptly remove the chips formed on the surface of the material. It should not be hammered into the grooves made.
How to choose a drill for the job, see below.