1956 - Establishment of honing stone production

A honing stone production facility is established for both long stroke and short stroke honing (superfinishing). This involves the production of blocks, which are either ground to size in a final machining operation or individually tailored for each customer with diamond-tipped tools (sawing). In order to prevent gravitation of the diamonds at 750° under the influence of oxygen, a switch is made to grinding in a wet process, i.e. cooling with water. This, too, is very unusual for the time and represents a technical innovation. This kind of protected diamond enables precise cutting and grinding.

Gartenstr. 7 - 17
53229 Bonn, Germany

Tel.: +49 (0) 228 408-0
Fax: +49 (0) 228 408-290