Extreme Machining That Will SHOCK You

Titans of CNC Academy
Titans of CNC AcademyJun 18, 2026

Why It Matters

High‑speed, high‑rigidity machining cuts cycle times and lowers per‑part cost, but only when paired with premium tooling, making equipment selection a strategic business decision.

Key Takeaways

  • YCMC10 machine sustains near‑max RPM with low spindle load.
  • Premium endmills outperform cheap Alibaba tools in high‑speed slotting.
  • 4140 steel cut at 785 RPM, achieving 115% spindle capacity.
  • Heat management critical; machine maintains stability without wobble.
  • High feed rates (125 in/min) enable rapid material removal.

Summary

The video showcases an extreme‑machining test on a YCMC10 CNC mill, emphasizing how the machine’s high‑speed capability and rigidity enable aggressive material removal that would be impossible on lower‑grade equipment.

Running at 785 RPM—just shy of the machine’s 787 RPM limit—the spindle sustained a load of 115 % while cutting 4140 steel with a ½‑inch endmill at 125 in/min feed. The operator notes that the spindle load stayed around 36 % for most cuts, indicating ample headroom despite the near‑maximum speed.

The presenter repeatedly contrasts premium Co‑Mill Pro endmills with $2 Alibaba tools, stating, "That’s why you don’t buy your endmills off cheap." He also highlights the absence of spindle wobble and effective heat management, which are common problems in older Titan slotting videos.

For production shops, the demonstration proves that investing in a robust high‑speed spindle and quality tooling can dramatically increase throughput while keeping tool wear and machine stress under control, ultimately improving profitability.

Original Description

Can you drill in a CNC machine with an endmill? Watch this aggressive machining footage in our YCM c10, YCM cx4, and our Syil x9 CNC machines using Kennametal's Harvi IITE, GoMill Pro, and KOR5 endmills.
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