PETG, or polyethylene terephthalate glycol, is a 3D-printing plastic valued for its toughness, impact resistance, and easier printing compared with many higher-performance filaments. It is less brittle than PLA, so it can better handle bending, clipping, and repeated use without cracking. That makes PETG a common choice when a printed part must survive real-world handling rather than just look good on the build plate.
In cyber security, PETG often appears in printed enclosures, cable guides, lab fixtures, sensor mounts, and snap-fit parts used for hardware prototypes or defensive tooling. Its durability matters because these parts may protect devices, hold tamper-evident components, or support tests against physical attacks. A clean print is not enough: if the part flexes, cracks, or warps, it can weaken a defense or make a security test unreliable. PETG is chosen when toughness is more important than the easiest print.