PEI is a CNC-machinable, high-temperature resistant, transparent and golden yellow material. It is characterised by an excellent stability of physical and mechanical properties at elevated temperatures due to the high glass transition temperature of 217 °C. It is also one of the most dimensionally stable thermoplastics on the market. Thanks to its excellent rigidity and strength up to 170 °C, it offers exceptional dimensional stability.


CNC Machining






PEI + GF30%


Proto&Go! offers you all its technology to manufacture CNC machined parts in PEI.

Thanks to the specific software developed by Proto&Go! you can now request your quotation for your parts easily through our online form and receive them anywhere in the world by express delivery.

Our CNC machining technology is suitable for both simple PEI prototypes, common in industry, as well as 3D prototyping of complex surfaces, offering a real alternative to 3D printing or sintering.

Select PEI from our over 100 available materials, both plastic and metallic, upload your 3D files and in less than 24 hours you will receive your online quotation with an estimated delivery time.

Do not hesitate to ask for a quotation without obligation and benefit from a technology currently only available to big companies at prices affordable to any user.

Thank you for trusting in the manufacturing services of Proto&Go! to obtain your prototypes and single parts in PEI.