Grades from satin to mirror finish
Ra values down to 0.05 µm
Mould cavity polishing to SPI A1
Light guide and lens polishing
Decorative metal polishing and buffing
Edge and corner rounding control
| Tool steel and mould steel |
| Stainless steel |
| Aluminium |
| Brass and copper |
| PMMA and polycarbonate |
| PEEK and POM |
| Specification | Details |
|---|---|
| Surface finish | Ra 0.05–0.4 µm |
| Grade | SPI A1–A3 achievable |
| Materials | Steel, stainless, aluminium, plastics |
| Methods | Hand, vibratory, diamond paste |
| Size limit | up to 1,000 mm typical |
| Lead time | 3–7 working days |
Bright dip after polishing
Protective lacquer or oil
Anodizing over polished surface
It depends on the part requirement. SPI A1 gives a mirror gloss, A2 is a high gloss, and B grades produce a semi-gloss that hides small defects. We match the cavity finish to the target part appearance.
Every surface imperfection scatters light and reduces efficiency, so light guides are polished to optical quality on the faces that must transmit or reflect.
Yes, but the process has to remove enough material to get below the damaged layer. We start with the appropriate abrasive grade rather than polishing over tool marks.
Type II and Type III anodizing for aluminium: clear, black and colour finishes with improved corrosion and wear resistance, thickness from 5 to 50 µm.
Type III hard anodizing builds a 25-50 µm ceramic-like oxide layer with up to 500 HV surface hardness for wear-critical aluminium parts.
Glass bead blasting for a uniform satin finish on metal and plastic parts. Hides tool marks, prepares surfaces for coating and gives a premium matte look.
Sand blasting for surface cleaning, descaling and roughening. Removes rust, scale, old coating and oxide before welding, painting or bonding.
Powder coating in RAL and Pantone colours: durable, thick and impact-resistant finish for sheet metal and fabrications, from 60 to 120 µm.
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