Amazon.sg:Customer reviews: Soundance Laptop Stand Adjustable Riser Compatible with Apple Mac MacBook Pro Air, Ergonomic Aluminum Holder for 10-17.3 Inch Notebook Computer, Multi-Angle Stand with Heat-Vent to Elevate PC, Silver
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My laptop stand seemed perfect at first but it got shaky when typing after a couple weeks of use. A close look at the bottom/base hinges reveals that one has a space/gap defect that the other doesn't have.
Beyond the apparent defect in this product, I see no simple way to tighten the hinge screws in the future, which is a concern even for ones that are not defective.
In the photos I'm posting, it looks like a very slight difference, but it seems to create a problem in how the laptop stand functions.