Glossary: Negative and Positive Moulds
负模与正模的概念
标签：负模, 正模, 凹凸关系, 二次翻模, 纹理镜像
实物压印得到的是"负模"——物体凸起的纹理在金属上变成凹陷（incuse）。若想获得与实物同方向的"正模"浮雕，可把负模金属再当作模具，压到第二块软金属上翻出正像，此为二次翻模。理解正负关系很重要：做首饰佩戴面常要正模凸显立体，而印章、拓片则常用负模。
Found-object imprinting yields a "negative": the object's raised texture becomes incuse (sunken) in the metal. To get a "positive" relief matching the object's direction, use the negative metal as a mould and press a second soft sheet to lift a positive—a second-generation transfer. The negative/positive distinction matters: wearable faces often want positives for relief, while seals and rubbings use negatives. ---