Sandblasted and PVD Coated CNC Machined Metal Parts

Good PVD starts with good machining, because the coating is only a few microns thick and shows every tool mark. We plan finishing passes for a consistent surface, then sandblast for a satin look or polish for a mirror base. Edges are broken evenly so the coating has no thin spots. Parts are cleaned thoroughly before coating, since any oil residue leads to poor adhesion.

PVD (physical vapor deposition) produces a hard, thin film that resists scratching and fading better than electroplating; stainless steel is the ideal substrate. Brass can be PVD coated after a nickel underlayer. Aluminum is usually anodized instead, as PVD on aluminum requires extra preparation. Sandblasting gives a matte, fingerprint-resistant base, while polishing gives a reflective finish that shows scratches more easily.

After coating, parts are checked for color consistency against an approved sample, adhesion and coverage on all visible faces. Dimensional checks cover critical features, because coating thickness is small but measurable on tight fits. Each part receives 100% visual inspection before packing in protective sleeves. Typical uses include watch parts, faucet trim, knobs, jewelry hardware, pen bodies and furniture fittings.