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REFERENCE · MACHINIST GUIDES

The brand-neutral machinist reference. Diagnose the cut, not the catalog.

Plain-English, ISO-based guides for the questions that come up at the machine: what the wear is telling you, what an insert code means, where to start on speed and feed, when to run wet or dry, how to read and break a chip, hit a finish, and stop chatter. No brand bias, grounded in standard practice.

Turning · Milling · Drilling ISO P·M·K·N·S·H No brand bias
THE GUIDES

Nine references, one decision each

Tool wear
Identify the failure mode on your insert, find the root cause, and apply the one corrective move that fixes it. Flank, crater, BUE, notch, thermal cracking and more.
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Insert decoder
Paste any ISO turning insert code and read every segment instantly in your browser, plus the full seven-position guide: shape, clearance, tolerance, chipbreaker, size, thickness and nose radius. Free, no signup.
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Speeds & feeds
Starting cutting-speed, feed and depth-of-cut ranges by ISO group for carbide turning, the RPM formula, and how to dial them in by reading the cut.
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Coolant guide
When to flood, run dry, mist or use high-pressure through-tool coolant, decided by ISO material group, plus emulsion concentration basics.
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Chip control
Read chip color and shape to diagnose a cut, break long stringy chips, and feed right with radial chip thinning so the edge cuts instead of rubs.
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Surface finish
What Ra, Rz and RMS mean, the finish each process can realistically reach, and the feed and nose-radius formula that predicts a turned Ra so you can hit a callout on purpose.
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Chatter
Why machining chatters and how to stop it: forced versus regenerative vibration, why stickout dominates, the deflection law, and a triage from work-holding to spindle speed.
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Boring bar deflection
Maximum overhang (L/D) by bar material, steel versus carbide versus anti-vibration, the cantilever physics behind taper and bell-mouth, and the rough, finish and spring-pass strategy for a deep bore.
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Cost-per-edge calculator
Turn insert price, edge count, tool life and cycle time into cost per edge, tool cost per part and an annual tooling-cost projection. Compare two inserts side by side.
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COVERAGE

What we cover — and what we don't.

A neutral platform is only as good as the boundaries it admits to.

In scope

  • Insert and tool selection across ISO P / M / K / N / S / H
  • Geometry, grade, coating and chipbreaker reasoning
  • Cross-reference and equivalence across major brands
  • Vc / feed / depth ranges and operation envelopes

Out of scope (today)

  • Real-time stock or pricing
  • Certified independent benchmarks
  • Custom CAM post-processor generation
  • Machine-tool selection beyond rigidity guidance
NEXT

The guide tells you what's wrong. The advisor gives the grade.

These references teach you to read the cut. When you need the verified grade, geometry and cutting data for your exact insert and material, brand-neutral and grounded in real catalogs, that is what the advisor is for.

Ask the AI advisor Open the grade cross-reference

Free, no strings: 8-brand grade cross-reference (PDF) · ISO material-group cheat-sheet (PDF)