Using a hammer in a closed room generates sound waves, but the decibel level is generally insufficient to damage objects like DVDs or plastic items unless they are directly struck. While extreme noise could theoretically cause physical damage, typical hammering is unlikely to create resonance strong enough to crack or damage items in the room. Concerns about moisture in cardboard boxes and plastic bags relate more to humidity than sound waves. Overall, sound waves from hammering do not pose a significant risk to the integrity of stored discs. The thread was ultimately closed due to repetitive questioning on the topic.
