Quality control guides

Tolerances, FAI reports, ballooning: the essentials explained simply, with free tools.

• ISO 2768 general tolerances: table and calculator

  ISO 2768-1 (f, m, c, v) and ISO 2768-2 (H, K, L) tables plus a free calculator: min and max of any dimension in one click. How to read “ISO 2768-mK”.

  Read the guide →

• H7 tolerance and ISO 286 fits: table and calculator

  Get the deviations of an H7 hole or a g6, k6, p6 shaft (ISO 286) in one click: min, max, clearance or interference. Table of common fits with examples.

  Read the guide →

• AS9102 FAI report: how to fill in Form 3

  Practical guide to the AS9102 / EN 9102 FAI report: when it is required, Forms 1, 2 and 3, filling in Form 3 column by column and avoiding common mistakes.

  Read the guide →

• Drawing ballooning: definition and best practices

  What is ballooning a technical drawing? What it is for (FAI, PPAP, inspection plans), what to number, best practices and how to save hours on every drawing.

  Read the guide →

• Operator inspection sheet: build it from the drawing

  Build an operator inspection sheet (self-inspection plan): characteristics to check, min and max, gauges, frequencies. Step-by-step method and mistakes to avoid.

  Read the guide →