All molds are machined and then ground, bead blasted or polished depending on the requirements. The Society of the Plastics Industry has produced a set of standard mold finishes to allow the customer to order exactly the desired finish from the molder.
|SPI Finish||Description||Typical Applications|
|B-1||600 Grit Paper||Medium polish parts|
|B-2||400 Grit Paper||Medium polish parts|
|B-3||320 Grit Paper||Medium - low polish parts|
|C-1||600 Stone||Low polish parts|
|C-2||400 Stone||Low polish parts|
|C-3||320 Stone||Low polish parts|
|D-1||Dry Blast Glass Bead||Satin finish|
|D-2||Dry Blast #240 Oxide||Dull finish|
|D-3||Dry Blast #24 Oxide||Dull finish|
Unless otherwise specified, an injection molded part will have an “as-machined” surface finish. However, most injection molds require additional processing to achieve a desired surface finish or texture.
Xometry offers a wide variety of surface finishes and additional mold textures to ensure that your parts meet all of their structural and cosmetic requirements.