54 54 1 2 CONCRETE & MASONRY DRILL BITS / DIAMOND TOOLS TECHNICAL DETAILS DIAMOND TOOLS All diamond tools consist of at least two parts, a base body 1 and the actual diamond layer 2 . The parts of the diamond tool that work their way into the material you are processing, the diamond segments, are just as crucial for the cutting capability and service life as is the connection between the segments and the base body. DIAMOND TOOL STRUCTURE Besides carbide tools, diamond tools have established them- selves on the market for processing very hard materials. Dia- mond products are the ideal tool for extremely accurate, fast and low-vibration applications in many materials as well as for cutting and large diameter drilling. Purchasing diamond tools is a question of trust. From the out- side you can barely tell the difference in quality between dif- ferent drill bits or cutting discs. Consequently, it is all the more important to opt for a product made by a renowned quality man- QUALITY FEATURES ufacturers when selecting tools. Heller can fall back on decades of experience in diamond tool manufacturing. Heller diamond tools are easy to use and cost-effective – con- sequently, traders can save time and costs: gain a crucial ad- vantage by drilling and cutting yourself. No more waiting times for external special-purpose providers – and work on the build- ing site will no longer grind to a halt. Diamond segments are tool-adapted moulds composed of a sinter metal and embedded diamond grains. They are sol- dered or welded onto the carrier. On account of chip forma- tion, the diamond segments may only be of a limited length in order to allow the worn material particles to be removed from the segment surface via the formed chip grooves. Con- sequently, the coolant (air or water, depending on the appli- cation) must reach the segment surface. A further purpose of DESIGN AND FUNCTION OF DIAMOND SEGMENTS the cavities is to remove the machining dust or slurry. In this case, toothed tools demonstrate crucial advantages. Tools with a closed edge, however, provide a better surface and fewer cracks around the edges of the workpieces – crucial for tiles, for instance.