Great Surface Finish – But How Will It Look On Your Plastic Part?

Request a FREE Surface Finish Sample Kit. Design for injection molding with confidence.

The surface finish of an injection-molded plastic part is critical. This is because it effects the outcome of your product going to market. Whether an internal or external part, the finish can range from a rough textured surface to a fine polish.  Sometimes, cosmetic treatments impact the outcome. Engineers and Product Designers determine the finish of plastic parts based on the materials used in the manufacturing process, the development or production stage, and end-use applications.

There are numerous thermoplastic resins available for plastic injection molding. Each material offers a variety of features such as durability, flexibility, and strength.  Xcentric offers a robust material selection. Therefore, there are many surface finish options for your custom plastic injection molded parts. Below is a list of our more popular finishes.


Mold Finishes
SPI* Standard Finish Finishing Method
A-2* High Glossy Finish Grade #6, 3000 Grit Diamond Buff
A-3* Normal Glossy Finish Grade #15, 1200 Grit Diamond Buff
B-2* Medium Semi Glossy Finish 400 Grit Paper
B-3* Normal Semi-Glossy Finish 320 Grit Paper
XT-1 Light Texture Light Bead Blast
XT-2 Heavy Texture Heavy Bead Blast
*SPI (Society of Plastic Industry) Standards


Our aluminum molds can be quickly produced. All texture and polish is directly applied to the mold itself and transferred to the parts themselves during the injection molding process.

Request a free 8-piece surface finish sample kit, now. To discuss material selection, or a current project, contact an Xcentric Application Engineer: or at