Cheaper, easier, and definitely uglier than a commercially available platform but it works well for the space I have. I used 2 layers of OSB and 1 layer of sanded plywood to create the main platform. I used 2x4's, sanded plywood, heavy-duty door hinges, and sheets of rubber floor mat to create a "foldable" deadlift platform to save space. Using 3 layers gave me enough height to use 2" wood screws to secure the rack and the DIY plate holders I made too.
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