Know-how

In metal cutting, choosing the right speed is crucial to achieving the best quality end product. An incorrect speed can not only affect the quality of the machined material, but also shorten the tool life. To ensure that the correct speed is selected, speed tables are an indispensable tool in metal cutting.

Basically, drilling holes does not seem to be witchcraft. Nevertheless, especially when drilling into hard workpieces, it can happen that the drill breaks and in the worst case gets stuck. Find out in this article how this may happen and how you can prevent the drill from breaking.

The use of coolants and lubricants in metal cutting is extremely important. Why this is so and the advantages of cooling and lubricating are explained in this article.

You want to drill into a steel beam and don't know which drill to use? In this article you will learn what drill to use, and what you should be aware of.

In order to manufacture drills, a tool steel is required that best meets the requirements of the application. For the production of drilling tools for metal cutting, high speed steel is used.

Countersinks differ in shape and application. For example, countersinks can be used for deburring drilled holes or for countersinking screws. How countersinks are constructed and in which applications they are used are described in this article.

You want to drill a hole in stainless steel but don't know which twist drill to use? In this article we explain how to drill in stainless steel and which twist drills to use.

Like step drills, sheet drills are used for cutting sheet metal. In this article you will find out which characteristics sheet drills have and which differences exist compared to step drills.

A variety of drills can be used to cut circular holes in workpieces. In this article you will find out in which applications step drills are used and what features they have.

Bi-metal hole saws are available in the tool steels HSS and HSSE-Co 8, in which materials you can drill best with them you will find out in this article.

There are hole saws in different variations: HSS, tungsten carbide and bi-metal hole saws. In this article we take a closer look at the properties of HSS and tungsten carbide hole saws.

In the last few months we have presented five coatings that refine RUKO precision tools. In this article we compare them and give an overview of the properties of these coatings.