Traditional garment-making techniques, as significant components of intangible cultural heritage (ICH), are increasingly threatened by globalization and industrialization, risking the loss of their transmissions. To address the limitations of existing preservation methods in systematically capturing the dynamic interactions between tailors, tools, and machines, this study proposes a digital framework for documenting and sustaining these techniques. The framework will be validated through its application in the Hong Kong Cheongsam Making Technique, showcasing its potential for broader ICH preservation efforts. The framework aims to support sustainable fashion practices and foster innovative design based on traditional garment-making techniques.