Mechanical
Surface
Finishing

Progressive abrasive polishing from machined surface to mirror finish. Manual polishing for complex 3D profiles and free-form surfaces; semi-automatic belt polishing for flat faces and tubes; electrolytic polishing for stainless steel and medical-grade parts. Mirror finish Ra ≤0.05μm for optical, decorative, and corrosion-critical applications. Sealing surface fine polish Ra ≤0.4μm for valve seats, piston rods, and seal interface surfaces. Materials: aluminium, stainless steel, titanium, copper, brass, and engineering plastics.

Uniform linear or radial brushed texture produced by abrasive belt or pad in a controlled direction. Standard for cosmetic aluminium panels, enclosures, and consumer electronics housings where a consistent satin appearance is required. 120 grit (coarse satin), 240 grit (medium satin), 320 grit (fine hairline), 400 grit (ultra-fine hairline). Single-direction brushing ensures uniform grain appearance across the whole part surface. Brushed finish is specified before clear anodising (Type II) to produce the characteristic silver-grey brushed-anodised appearance of premium consumer electronics enclosures.

Controlled media blasting to produce uniform matte or satin surface texture — removing machining marks, tool paths, and surface irregularities to create a visually consistent appearance before anodising, painting, or powder coating. Glass bead blasting: fine satin Ra 1.6–3.2μm — the standard pre-treatment before Type II anodising for consistent colour. Steel shot: coarser matte Ra 3.2–6.3μm for steel parts before coating. Alumina blasting: aggressive matte for thermal spray adhesion. Dry ice blasting available for plastic parts requiring surface preparation without media contamination. All blasting performed in enclosed cabinets with full masking of precision bores and threads.

Mass finishing process for deburring, edge rounding, and surface smoothing of high-volume CNC parts. Ceramic, plastic, or steel media contacts all surfaces including internal channels and recesses inaccessible to hand deburring tools. Process simultaneously deburrs all edges, rounds sharp corners to 0.05–0.3mm radius, and improves surface finish from machined Ra 3.2μm to finished Ra 0.8μm. Batch loading 1–500+ parts per cycle; cycle time 20–120 minutes. Not suitable for parts with tolerance-critical surfaces where material removal of 0.01–0.05mm would be detrimental — precision bore and sealing surfaces masked before vibratory finishing.

Complete deburring of all internal and external edges on precision CNC machined parts. Process selected by part geometry: CNC chamfering for all programmed edges during machining (most consistent); manual hand deburring (files, scrapers, abrasive tools) for complex 3D intersections and tight internal features; rotary deburring tools for cross-holes and bore intersections; thermal/electrochemical deburring (TEM/ECM) for internal burrs inaccessible by mechanical means in hydraulic manifolds, valve bodies, and medical device components. 100% visual edge inspection with 10× magnification for safety-critical parts — documented on inspection report.

CNC-programmed chamfering and edge breaking during machining — the most consistent and dimensionally accurate method of eliminating sharp edges. Chamfer angle (typically 45°) and dimension called out on drawing per ISO 13715 (edge condition symbol); alternatively, general note "all sharp edges broken 0.3mm C45° unless noted." Edge radius blending (R0.1–R1.0mm) for structural parts where chamfer is not appropriate. Precision chamfering of seal groove edges to prevent O-ring damage during assembly. Debur-only for parts where edge geometry must be preserved. All chamfering documented and measured on CMM for precision assemblies.