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.

17 Feb 2023Process notesStarting feeds and speeds, and what they assumePrinted page 59 of the 2026-2027 catalogue gives speed and feed by material. Those numbers are a starting point, not a guarantee.1 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 min19 Dec 2022Process notesWhy DC426 shows up in inspection failuresThe DC426 series black-coated solid carbide drill is designed for high-precision micro drilling in challenging materials such as steel, stainless steel, copper, and aluminium alloys. ## Series Overview and Key.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 min30 Mar 2022Application notesWhere HDCS636 fits in the process sequenceThe HDCS636 series TiN-coated left-hand step solid carbide drill delivers precise stepped hole machining with consistent performance across a wide diameter range. ## Series Overview and Application The HDCS636 series.3 min