Custom Eyewear Mold Costs: When Is New Tooling Necessary?
A buyer sends a new eyewear design to several suppliers and receives three very different tooling quotations. One supplier charges only a small development fee. Another lists separate costs for the front frame, temples, logo and lenses. A third simply writes “custom mold fee” without explaining what the money covers. These quotations are difficult to […]
Why Do Sunglass Lenses Pop Out? Manufacturing Causes and Fixes
A sunglass lens can look perfectly secure during sample approval and still pop out after shipping, heat exposure or repeated temple opening. When this happens, the first explanation is usually simple: the lens was cut too small. That is possible, but it is not the only cause. In some cases, the lens is actually too […]
3-Barrel vs 5-Barrel vs 7-Barrel Eyewear Hinges: An OEM Guide
Is a 7-barrel hinge really stronger than a 5-barrel hinge, or does it simply place more metal inside the temple? This question comes up frequently during custom eyewear development. A buyer reviews a sample, sees a 5-barrel hinge, and asks whether it can be upgraded to a 7-barrel version to make the frame feel more […]
