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Diamond tools are indispensable for precise, fast, and durable work on construction sites and in workshops. At the Karl Dahm online shop, we offer a comprehensive range of high-quality tools for porcelain stoneware, natural stone, concrete, patio slabs, and ceramics. Our products are perfectly tailored to the needs of tilers, stonemasons, and tradespeople.
Our diamond cutting discs are the core for clean and efficient cutting.
Ideal for hard materials like concrete and granite. Cooled with water, they reduce dust and overheating – perfect for long-lasting cuts.
Flexible and quick to use without water. Optimal for porcelain stoneware and tiles where fast cuts and clean edges matter. Models like Speed or Sharkahm Ultimate are our bestsellers here.
For finishing cut edges, grinding natural stone, and removing adhesive residues, we offer a wide range of diamond grinding discs (Ø 125 mm) and diamond grinding cups:
Grinding discs for coarse and fine grinding in various grit sizes
Diamond grinding cups such as the DST series with specialised segments for concrete, screed, natural stone, or coatings
Special grinding cups with PKD coating for particularly stubborn residues.
Our diamond core drills enable exact holes in hard materials.
Especially for fast drilling without water, with paraffin-coated bond to reduce dust generation.
For low-dust, cool drilling with water – extending core drill lifespan and ensuring clean drill holes.
Premium quality with high temperature resistance and extremely long service life, ideal for professional tradespeople.
Practical complete packages with multiple sizes, perfectly equipped for daily use.
Our diamond hand pads are specially designed for manual finishing of tiles and stone – for fine grinding and polishing work that is difficult to access with machines.
For exact drilling, we offer robust drill stands and a wide selection of stone/tile drill bits in various sizes and designs. This ensures every drilling operation is safe, clean, and comfortable.
Diamond cutting discs feature a cutting edge embedded with industrial diamonds, which lasts significantly longer and cuts more precisely than conventional metal cutting discs. They enable fast, clean, and chip-free cuts in dense and hard materials such as granite, porcelain stoneware, concrete, and ceramic. Their high durability and reduced wear save working time and overall costs—making them ideal for professional use.
For hard materials such as natural stone, granite, or concrete, wet cutting is ideal because the water cools the diamond cutting disc, prevents overheating, and significantly reduces dust. Dry cutting is recommended for smaller or mobile jobs, especially when cutting tiles or porcelain stoneware. For long or demanding cuts, wet cutting should always be preferred to extend the disc’s lifespan.
Diamond grinding discs differ in grit size and segment design. Coarse grits (e.g., 30–50) are suitable for fast material removal and rough grinding. Fine grits (100–200) are used for polishing and finishing. Also consider the material compatibility—whether the disc is designed for concrete, natural stone, screed, or porcelain. Clear product markings help ensure correct selection and optimal grinding results.
Diamond grinding cups are robust, usually conical tools designed for use with angle grinders—perfect for grinding edges, removing welds, and surface leveling. Diamond grinding discs, on the other hand, provide an even finish across larger surfaces. Both tools are available in different grit levels for coarse or fine processing and complement each other in professional applications.
MATRIXTEC diamond core bits use advanced diamond-embedded segments with heat-resistant bonding. This ensures high drilling speed, reduced wear, and stable performance even under heavy load. They are ideal for drilling into concrete, granite, and hard stone—perfect for continuous use on construction sites.
Wet core bits are cooled with water while drilling, which reduces heat, increases durability, and minimizes dust. Dry core bits do not require water and are suitable for flexible or small-scale work. However, for very hard materials or long drilling depths, wet drilling is always recommended to protect the tool.
Diamond hand pads are ideal for fine grinding, polishing, and detailed finishing of tile and stone surfaces. Lightly moisten the pad to improve the surface finish and achieve smooth results. Avoid applying excessive pressure—diamond abrasives work through movement, not force.
A drill stand stabilizes the drill and ensures perfectly straight and controlled drilling. It prevents slipping, reduces physical effort, and improves safety. It is especially recommended when drilling large diameters or working with very hard materials.
After each use, diamond tools should be cleaned thoroughly and stored dry. For wet cutting tools, remove any slurry or residue. Regularly “sharpen” diamond cutting discs using a dressing stone or abrasive block to expose fresh diamond surfaces and maintain cutting performance.
Diamond cutting discs and core bits are available in different diameters, bore sizes, and mounting systems. Always check compatibility with your angle grinder, core drill, or table saw. Manufacturer specifications provide guidance regarding suitable operating speeds and applications.
When working with diamond tools, wearing safety glasses, hearing protection, gloves, and a dust mask is essential. Dry cutting produces fine dust, so work in well-ventilated environments. Check tools and machines for damage before use and operate only at recommended speeds.
Always use the correct tool for the material and application. Keep diamond cutting discs cool (water for wet cutting, breaks for dry cutting) and clean tools after use. Using accessories such as drill stands reduces stress on the tool and improves accuracy, extending the tool’s overall lifespan.
Karl Dahm Diamond Tools – Precision, Durability, and Efficiency for Your Success. Rely on quality and experience from a single source.
