Raising vs Spinning (glossary)
起凸与旋压的区别（术语）
标签：起凸, 旋压, 手锤, 车床, 对比
起凸纯靠手工锤击逐点塑性成形，适合小批量、有机形态与厚壁件，肌理自然；旋压将板材顶在车床模胎上靠滚轮旋转压延成形，效率高、壁厚均匀但受回转体限制。二者可结合：先起凸定形再旋压收口。
Raising shapes purely by hand hammering point-by-point — best for small batches, organic forms and thick walls with a natural texture. Spinning presses sheet against a lathe chuck with a roller — efficient and uniform but limited to revolved shapes. They combine well: raise to set the form, then spin to close the neck. ---