Key Smart - My Swiss-knife key holder ver. 3.0

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This is a print version of Key Smart, a Swiss Army Knife-like key holder. To assemble it, you'll need to create two pieces of the plate that will hold all your keys in the middle. These pieces should then be securely fastened together using binding screws, which can be easily sourced from a stationery store. To accommodate different thicknesses of key, consider adding a 0.5mm thick washer for adjustable support. For added convenience, you can opt to purchase longer binding screws to hold more keys if desired.