A 3D-printed component is a physical part made by building up material in layers from a digital design, a process known as additive manufacturing. Printed parts are often used for custom guides, brackets, housings, and fixtures when a standard component does not fit the task.
In cyber security, the term may arise when assessing the physical security of devices or production systems. A printed fixture can constrain movement and improve repeatability, but its strength, accuracy, and wear characteristics depend on its design and material. Attackers may also exploit weaknesses in the design or supply chain of manufactured parts, while defenders can use validated designs, inspection, and access controls to reduce risk. A printed part is not inherently secure or unsafe; its role and properties matter.