How do centrifugal spin coaters work, and are they suitable for 3D-printed parts?

Centrifugal spin coaters combine dipping and high-speed spinning to apply uniform coatings—such as dyes, adhesives, waxes, or lacquers—across batches of small parts. After immersion in a liquid coating tank, the parts are spun at variable speeds (up to 1400 RPM) to evenly distribute the coating and remove excess. Bel Air’s enclosed system captures and recycles the coating material, eliminating waste and minimizing solvent evaporation.

Spin coating is especially effective for 3D-printed parts made from materials like SLS or MJF nylon, fire-retardant ABS, or SLA resins. These parts often require even surface coverage before further handling, finishing, or end use. Bel Air’s process ensures coatings are applied consistently, even on complex geometries or internal features, without pooling or manual touch-up. Whether you’re working in prototyping or production, spin coating offers a scalable solution for 3D post-processing.