Bel Air Finishing was tasked with identifying the optimal media size for burnishing CNC-machined aluminum heatsinks, ensuring uniform surface enhancement while maintaining precise thermal performance.

To achieve a highly polished, durable surface, Bel Air Finishing recommended several burnishing solutions, including the Magnetic Pin Finisher, Roll Burnisher, and Centrifugal Disc Finisher. These non-abrasive mass finishing methods effectively hardened and smoothed the heatsink’s surface without altering critical dimensions. By selecting the appropriate burnishing system and optimizing media size, we ensured consistent, high-quality results suitable for electronics and thermal management applications.

If you are unsure what equipment and media you require to achieve your desired surface finish, then send us your part, and we will evaluate it and provide you with a metrology report.