A real story, don't lost your money unexpected

One of my friend, Peter, NL, tell me the story of first time he outsource mold making, the sales is news, he ignore the plating require. He forgot to make photo before ship mold too. When Peter clearing the mold after get it, he was so shock, the mold was forget to plating. It takes much cost for plating in local, and it takes cost for take back and re-ship mold too, whatever it loss much time. So be careful for plating.

There are many type for mold surface finish, such as SPI A2, MT11660, VDI-3400 30 and YS7298 etc. Whatever the standard you want, just provide the number of standard. Maybe it will be confusion when you do the first job with mold supplier. It could classify 4 type:

1) Polishing

*For polishing, there are Diamond Buff for SPI A1, A2 and A3, Paper for SPI B1, B2 and B3, Stone for SPI C1, C2 and C3and Dry Blasted for SPI D1, D2 and D3. The standard for American. Following is detail:

SPI-Mold-GuidePolsihing Spec

2) Texture

There are Thin Fire Texture and Texture. VDI 3400 is CHARMILL VDI Specification, and Texture is MT  Specification. Now many more company like to us China YS standard. As it is lots of choose and cheaper but good quality.


3) Plating

Plating is not only increase hardness and gloss of mold surface, but also increase corrosion resistance, heat resistance and electrocontractility. So it could increase mold life. Usually it uses chrome-plating.

Plating Mold Surface

4) Blasting

We use the Blast Media: Ceramic beads, Glass beads, Plastic, Aluminum oxide, Silicon carbide, Carborundum and Metal shot and steel grit

Glass bead and ceramic bead media are used to clean, smooth, brighten, peen, and de-scale surfaces. Fine glass and ceramic media can smooth or de-burr parts. Aluminum oxide, crushed glass, and steel grit are used in more aggressive applications such as machined components and can remove heavy scale or rust. Wet blasting can also aid in lubricity and release.