When there are no data for old parts, and although there is a mold, there is no data, we will scan the actual item to create the data.
When there are old parts without data, and although there are molds, there is no data, if the actual item is available, we can create data based on it. I think this is an effective method in cases where old parts are suddenly needed. Additionally, by scanning freehand-created objects, we can preserve them as data. As long as the data is retained, it becomes possible to replicate the same product through modeling or machining when necessary.