June 26, 2026

Last month, a long-standing automotive client in the US Midwest sent us an urgent email. While using our tungsten carbide drill bits for metal to drill quenched-and-tempered 4140 steel (HRC 32–35), their tool life suddenly plummeted. A process normally stable at 800 holes crashed completely, with some drills suffering catastrophic failures inside the hole after […]

Last month, a long-standing Tier 1 automotive mold client from North America reached out for urgent assistance. Their CNC machining center was rushing to produce a batch of D2 mold steel inserts heat-treated to HRC62. Due to an engineering change, they needed to urgently drill a series of deep holes into these hardened workpieces. The