Dust in Painting - Oven Tray | Product Inspection Finding

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Product Inspection Finding

This defect was found during our pre-shipment inspection services for an oven tray. It is a typical and recurring surface finishing issue, so we have documented it here as a reference to help you brief your supplier before mass production.

During our inspection, we encountered this critical painting defect. We are sharing this analysis to provide you with a clearer understanding of the root cause and the required corrective actions to secure your product quality standard.

Finding Analysis	Details
Product	Oven tray
Defect	Dust contamination in painting
Root Cause	Incomplete cleaning of residue in the painting machine or room before painting, especially when switching between different colors.
Corrective Action	Implement a thorough cleaning protocol for the painting equipment and workspace before each batch. Pay special attention to color changes — ensure all residual powder from the previous run is completely removed.
Frequency	⭐⭐⭐⭐☆
Rework Difficulty	⭐⭐⭐⭐☆
Rework Collateral Risk	⭐⭐⭐⭐☆

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Inspection Photos

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💡 QC Insight for Buyers

In painting operations, “cleanliness is next to godliness” — and it’s also the difference between a premium finish and a rejected batch. Dust contamination is one of the most common painting defects, and it’s entirely preventable with proper cleaning protocols.

When briefing your supplier, don’t just ask them to “paint it well.” Explicitly request a cleaning verification step before each painting run, especially when switching colors. A simple visual check of the painting room and equipment can save thousands of dollars in rework costs — one of the most common and preventable issues we catch during inspections.

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