July 1, 2026

HRC65 full tooth thread cutter

How to Inspect Thread Quality After Using Thread Milling Cutters for Steels

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Last month, a client in Stuttgart, Germany, sent an urgent email regarding a batch of newly purchased carbide thread milling cutters used on high-pressure valve bodies made of 42CrMo4 steel. The machine operators were frustrated because the “Go” thread gauge would jam after entering only two threads, even though the surface finish appeared flawless. As […]

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graphite end mill

Graphite Machining System: How to Machine Graphite Without Tool Wear

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During a pilot production run of graphite EDM electrodes for a European client, we hit an unexpected bottleneck. The issue wasn’t our five-axis machine precision or our programmed toolpaths. Instead, we faced a hidden failure point: a drastic, non-linear drop in tool life characterized by sudden edge chipping and catastrophic failure. Performance varied wildly across

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