A few days ago, a reader asked Workingbear about color variation issues between plastic injection-molded parts, and whether there are any good ways to better control color consistency.
The problem was probably caused by the purchasing team trying to reduce supply chain risk by placing different plastic molds with different injection molding vendors. During incoming inspection, each individual plastic part passed the color specification requirements and stayed within the defined upper and lower tolerance limits. However, once all the plastic parts were assembled into the final product, obvious color mismatch issues became visible between the parts.
