The mold is smoothed and polished with a diamond buff, resulting in a mirror-like finish.
SPI STANDARD: A-1, A-2, A-3
The mold is polished with ultra-fine grit sandpaper, which provides fine surface finishing of the product.
SPI STANDARD: B-1, B-2, B-3
The mold is sandblasted with fine stone powder, which removes all traces of the product manufacturing.
SPI STANDARD: C-1, C-2, C-3
The mold is etched with fine stone powders and then sanded. The surface of the product is therefore textured.
SPI STANDARD: D-1, D-2, D-3
The mold is surface treated at the discretion of the tool operator. The tooling marks can be seen.
