Sometimes known as “ULTEM”, PEI is most commonly found in 3D printing as the de-facto bed material of choice. For those with machines strong enough to meet the printing requirements, PEI is also a viable filament to print. This amorphous polymer needs no post-processing and provides ready-to-go parts right off of the print sheet.
Standard guidance on additives applies. With the EXCEPTION of colorants as PEI filaments only comes in its natural colors or in the color of the additive it has.
Lower temperatures can be made to work but will pit you in a battle against incredibly strong warping from the plastic, both with overall part design as well as from the part warping from the bed.
These numbers are provided as a baseline, and need adjustment and calibration for your specific printer/filament/color combination.
| Variant | Hotend Temperature | Heatbed Temperature | Chamber Temperature | Optimistic Usable Temperature |
|---|---|---|---|---|
| PEI | 395C | ? | ? | 200C |
None.