Copper is king.

A field book for copper and glass: compare, wire, test, pick.

Tell us the job. Bun answers.

Field notes load with the tables below.
Four pairs under load, drawn live. Scroll on: the pairs turn with the page.

The field book.

Four chapters, one bench. Start where the job starts.

  1. Every category, no marketing fog.Live data from the Bun backend. Filter by what you actually need.
  2. Terminate a jack in 9 steps.Stripper, punch-down tool, keystone jack, side cutters, tester.
  3. Light keeps going for kilometres.Fibre guides laser light down a glass core by total internal reflection.
  4. Earn your crimper badge.Size the run, score the quiz, look up the word.