Desktop interlocking bookshelf, no nails or glue required, the interlocking design creates a rigid connection for stability, so **there are no tolerances (if you need easier assembly or don't have a hammer, you can slightly scale down the Y+Z axes of the 5 baffles, but after scaling, it won't be a rigid connection, and stability will be slightly worse)**. **If you don't plan to use super glue for a rigid connection, a rubber mallet is absolutely necessary**

PLA has a higher risk of strength issues and creep, so materials like PETG or ABS are recommended. A thickened design has been implemented, and the Z-direction has also been modified based on its intended practical use. With a 32.5° tilt angle, the main center of gravity is distributed across the 5 baffles, which slightly reduces creep. Tested with original PETG Basic, it can hold 5kg of books, with the middle part bending slightly but it's not a major issue

When hammering in, make sure to hammer vertically downwards as much as possible. Tap it gently, 5 times alternating. Finally, there will be an extra 5mm of remaining space, insert it between two books and continue hammering. Finally, just put the decorative cover on