Why Sampling Frequency Matters More Than You Think | Lab Wizard

📋 When the charts look fine but the parts do not

The barrel plating run finished on time. The operator recorded voltage, current, and temperature at the standard intervals. Every reading fell within control limits. The control charts looked stable. The parts came off the line, and the quality lab measured plating thickness variation that exceeded the customer specification by 30 percent.

Why Your Process Looks Stable but Is Not | Lab Wizard

Why Your Process Looks Stable but Is Not: Process Monitoring

In metal finishing and surface treatment operations, process monitoring is often judged by what dashboards show. If values stay within limits and no alarms fire, the process is treated as under control. Even capable metal finishing software can still show green charts while important variation never reaches the chart.

The Problem With Averages in Process Data | Lab Wizard

In surface finishing and electroplating, averages show up everywhere: mean bath analysis for the day, mean thickness for a lot, mean pH from rounds, mean cleaner concentration for the week. Those summaries are convenient, but they are not the same thing as knowing whether the process behaved.