How Should Radii, Bevels, Holes, and Grooves Be Designed for Powder-Coated Surfaces?

Radii, bevels, holes, and grooves are both part of the visual language of furniture and important variables in surface continuity. If a design considers appearance but ignores coating formation, inspection, and assembly, unnecessary limitations can emerge when the product is scaled to production.

Core judgment: Design details should satisfy four conditions at the same time: visual intent, accessibility, inspectability, and assembly functionality.

Radii create more natural transitions

A radius softens a sharp edge and can help color and texture transition more naturally around a corner while also improving tactile feel and handling. The appropriate radius depends on component scale, design language, and the location in use.

There is no one radius that fits every product. A thick desktop, a thin door, and a small decorative part should be sampled independently rather than using one dimension for all geometries.

Bevels require control of the visual edge line

Bevels can create a lighter profile, a refined edge, or controlled shadow lines. If a bevel is too narrow, too steep, or combined with a sharp corner, surface coordination and inspection become more demanding.

Design review should determine whether the bevel is a major visible surface, how it interfaces with adjacent parts, and whether it is vulnerable to impact during packaging or use.

Holes should separate functional requirements from surface scope

Cable holes, hinge holes, connection holes, and decorative openings serve different functions. Drawings should identify whether the opening is visible, whether the internal surface is part of the coating requirement, and whether the area will be machined after coating.

Where hardware fit is tight, the relationship between the coating and assembly tolerance must be validated. Appearance inside a hole should not compromise function, while convenient assembly should not justify uncontrolled damage to visible surfaces.

Grooves should balance openness, tactile use, and cleaning

Grooves can create lines, integrated pulls, or decorative shadow effects, but very deep and narrow profiles create more shielding and can also collect dust or become harder to clean. Groove geometry should therefore consider hand feel, powder accessibility, and inspection method together.

A more effective development approach is to compare representative structural samples of several geometries and select the version that balances visual intent with repeatable production.

Technical boundary: No universal geometry limit, equipment setting, or process-compensation method is provided here. Final geometry is subject to approved sample results.

Project communication: For important radii, bevels, holes, and grooves, provide sections and 3D files together with visible-surface grades and functional requirements.