Observed arrival · 2026-09-30

Tarang Chang’s machining reference desk

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Editorial interest 78/100 Selection signal · not a rating of the site

A Thai-language reference site combining machining calculators, standards tables, and lessons on CNC programming and GD&T.

Landing page captured for the 2026-09-30 issue.

For: Thai-speaking machinists, CNC learners, and mechanical drafters
Worth noticing: The four no-signup calculators cover spindle speed and feed, tap-drill sizing, ISO 2768-1 tolerances, and ISO 286 fits.

Field notes

The reference section separates G and M codes, thread tables, and tolerance and fit lookups, while the lesson area lists 11 CNC programming chapters and one GD&T chapter. One fit example is Ø25 H7/g6, with clearance and interference values; the ISO 2768-1 calculator names four tolerance classes. The site says the material is written by engineers and shop teachers and is published under CC BY-NC-SA 4.0.

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Editorial observations of this landing page, not a rating.

○OpenPublic substance visible

✦PrettyNotable craft visible

●ProPolished or operationally mature

◎NicheUnusually specific use

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