3Drommet

3Drommet is a term used in maker and hardware circles to describe a 3D-printed grommet-like component designed to protect and guide cables passing through panels, cases, or enclosures. Unlike traditional metal grommets, a 3Drommet is typically manufactured with polymers through additive manufacturing and can be customized to fit nonstandard hole sizes.

Design and variants commonly include an outer flange that sits against a surface, a hollow bore through which wires pass, and sometimes a lip or bevel to reduce movement. Variants may offer multiple inner diameters, varying wall thicknesses, or integrated strain-relief features. 3Drommets are frequently printed in materials such as PLA, PETG, or tougher resins; both FDM and resin printers can produce them, with varying post-processing needs to improve fit and finish.

Applications include electronics enclosures, 3D printer projects, robotics, DIY computer cases, and other hobbyist builds where cables require organization and protection from abrasion. Designs may be made to snap into holes or to be press-fit for a secure hold, and can be tuned for different cable bundles and environmental conditions.

Advantages of 3Drommets include customization, light weight, corrosion resistance, and rapid prototyping. Limitations can involve lower abrasion resistance or heat tolerance compared with metal grommets, as well as the need for careful sizing and possible post-processing to ensure a proper fit.

Open-source and distribution: Many 3Drommet designs are shared on open hardware platforms, enabling users to adjust bore size, flange diameter, and material choice to suit specific applications. See also grommet, cable management, and open-source hardware.