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Steel Wing
TECHNICAL NOTES

Technical Notes

Short, practical notes from our engineering team on cutting-tool selection, application parameters and machining practice.

  1. Tapping

    Choosing a machine tap: blind holes, through holes, and the real causes of tap breakage

    The difference between spiral-flute and spiral-point taps, HSS-E vs HSS-E-PM, tap drill diameter, and practical rules that prevent tap breakage.

    October 14, 2026
    3 min read
  2. Tool Holders

    BT or BBT? When a Dual-Contact Tool Holder Makes a Real Difference

    The difference between BT and BBT (dual-contact) holders, which operations actually benefit from BBT, and what to watch for when switching.

    October 14, 2026
    2 min read
  3. CBN / PCD

    Turning Hardened Steel with CBN Inserts: A Real Alternative to Grinding?

    When hard turning actually replaces grinding on parts at 45–65 HRC, which CBN grade suits which job, and what to watch for in practice.

    October 14, 2026
    2 min read

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