The expansion of additive manufacturing or 3D printing as a novel (re)production method disrupts social consumption patterns and challenges existing conceptualisations of tourist souvenirs as material, metonymic and symbolic objects that often lack authenticity. The paper evidences how using additive manufacturing to involve visitors in souvenir design decisions in a heritage site may influence their perceptions of souvenir authenticity and value. The transience between physical states (physical object to scanned digital file to physical object again), and the opportunity for visitors to self-craft or contribute to the (re)production process adds a performative element to souvenir consumption that imbues the 3D printed souvenir with its own authenticity and aura. As 3D printers become more ubiquitous, they will redefine further souvenir materiality.

增材制造或3D打印作为一种新颖的（再生产）方法的扩展，破坏了社会消费方式，并挑战了旅游纪念品作为材料，转喻和象征性物品而通常缺乏真实性的现有概念。本文证明了如何利用增材制造来吸引游客参与遗产站点的纪念品设计决策，可能会影响他们对纪念品真实性和价值的看法。物理状态（从物理对象到扫描的数字文件再到物理对象）之间的瞬态变化，以及访问者进行手工制作或参与（再生产）过程的机会，为纪念品的消费增添了一种表现元素，使3D打印的纪念品充满了本身的真实性和光环。随着3D打印机越来越普及，