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PF Zone: Decorative Anodizing

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Anodizing Clinic: Measuring Color of Coatings with a Colorimeter
Q. Recently, a company asked us to match its samples so we could do work for them. According to our method, we matched the samples, but they were rejected when they were sent to the company. We were told the samples were out of tolerance. We discovered the company used a different brand colorimeter with a different color scale to measure the color. Is there a set standard in the anodizing industry for measuring and matching colors?
Anodizing Helps Yo-yos Make a Colorful Comeback
One Drop YoYos in Eugene, Oregon, is a leading high-end yo-yo manufacturer. It gets some of the 8,000 products it makes finished at Gruntbull Anodizing in Gettysburg, Ohio, whose splash anodizing process combines as many as six colors on the same part. The result is a piece of art.
Jack Tetrault of Sanford Process is Chairman of the Aluminum Anodizers Council
Results of the AAC annual election of Officers and Directors were announced at the 25th Annual Anodizing Conference and Exposition on October 5 in Montreal.
Jack Humble on the Value of Aluminum Anodizers Council
As term on the Board of Directors draws to a close, Humble expresses appreciation to everyone at the AAC on a rewarding and fulfilling experience.
Anodizing: Corrosion on Hardcoat Anodized 7000 Series Forging
Q. I sent you photos of two parts that are alloy 7050 forgings. On these parts there are spots that appeared as a result of Type III (hardcoat) anodizing that were not present before anodizing. They look like corrosion of some sort, but the corrosion looks a little different on each part. What causes these spots to appear and what measures can be taken to prevent or eliminate them after they occur?

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