Notes from the grinding floor.

Short engineering notes on tool geometry, cutting data and what the inspection reports actually say. Written to be checked, not skimmed.

19 Jun 2026Product notesHow to read a carbide micro drill part numberThe prefix is the grinding series, four digits give the diameter, and the geometry string gives the rest. One example decoded.2 min28 Aug 2024Product notesFive coatings on standard part numbersUncoated, TiN, black, bronze and DLC. The coating is part of the series code, so it can be filtered before comparing diameters.2 min27 Jan 2023Product notesHDCS636 and the neighbouring options in the recordThe HDCS636 series provides a reliable solution for non-standard step drilling applications, offering precise control over stepped and counterbored hole geometries. ## Series Overview and Application The HDCS636 series is.3 min11 Dec 2022Product notesHow to read the geometry callout on HDCS636The HDCS636 series delivers consistent performance in non-standard step drilling applications with precise dimensional control and durable TiN coating. ## Understanding the Series Code and Geometry Callout The HDCS636 series.3 min6 Dec 2022Product notesSelecting HDC636: what the production record tells youThe HDC636 series is ideal for high-speed PCB and precision drilling applications due to its TiN coating and left-hand design, which ensures efficient chip evacuation and surface finish. ## Selecting.3 min6 Jan 2022Product notesDC426 and the neighbouring options in the recordThe DC426 series black-coated solid carbide drill offers superior performance in micro drilling applications due to its optimized coating and geometry. ## Series Overview and Key Features The DC426 series.3 min