Quality
Inline quality, DHU, defects and the traffic light system.
DHU (Defects per Hundred Units) — Complete Guide
DHU measures defects per hundred units and is a key quality KPI in garments.
Root cause analysis in garments: 5 Why, fishbone and CAPA
How to move from "rework it" to "stop it happening": a fishbone example for high DHU, a 5 Why chain, and a corrective and preventive action (CAPA) format that closes the loop.
Common sewing defects: causes and prevention
Skipped stitch, broken stitch, puckering, open seam, uneven stitch, raw edge, needle holes and stains - what causes each and how to stop it at the machine.
Garment measurement checking: points of measure and tolerance
How to measure a garment correctly, read a measurement chart with tolerances, record results by size, and find the root cause when measurements go out.
AQL sampling inspection explained with the table
How to read the AQL table (ISO 2859-1 / ANSI Z1.4): lot size, inspection level, code letter, sample size and accept/reject numbers - with worked examples.
Quality checkpoints in a garment factory: from fabric to shipment
The seven quality checkpoints, what each one checks, who does it, and why catching a defect one stage earlier saves time and money.
Built-in quality, TQM and the cost of quality
Why quality must be built at every step instead of inspected at the end, the 7 principles of Total Quality Management, and the four costs of quality every factory pays.
Traffic light system for inline quality
A simple red-yellow-green method that finds quality problems at the operator and fixes them within the hour.
DHU vs defect %: which quality number should you report?
Two common quality measures, how they differ and when to use each.