Reasons to choose Ultimaker CPE Product designers use CPE to make extremely tough and dimensionally stable functional prototypes. Excellent chemical resistance Excellent toughness and dimensional stability Good interlayer adhesion, especially when using the front enclosure add-on Low levels of ultrafine particles (UFPs) and volatile organic compounds (VOCs) Ideal for short run manufacturing and functional prototypes Transparent option available.

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CPE (co-polyester) is a chemical resistant and relatively tough material that is widely used for functional prototyping and modeling. Here you will learn how to achieve the best print quality with Ultimaker CPE.

Ultimaker CPE can be printed on all Ultimaker 3D printers with a heated build plate as a single material. On the Ultimaker 3 it can also be printed in combination with PVA or another color of CPE.

Always use the latest version of Cura and make sure that your printer is updated with the latest firmware version to include the correct material profile for Ultimaker CPE.

Note: The information provided here applies to Ultimaker CPE. We cannot guarantee similar quality when using third-party filaments.

Recommended Settings

Temperatures

Ultimaker CPE requires a build plate temperature of 70 °C. Use the table below to find the recommended nozzle temperature and diameter for your Ultimaker to achieve the best print results.

Note: When using the Ultimaker 3, the nozzle and build plate temperature on the initial layer may be different due to the 'Print Temperature Initial Layer' and 'Build Plate Temperature Initial Layer' settings in Cura.

Cooling

The print cooling fan speed for Ultimaker CPE is different per printer and nozzle size to achieve the best quality. The fans are not fully on while printing to avoid layer bonding problems. For shorter layers, the print cooling fan speed is gradually increased to 100% to ensure optimal quality throughout the print.

Adhesion

Although Ultimaker CPE adheres well to the glass plate, it does tend to warp heavily. For optimal adhesion and glass plate protection using the correct adhesion methods is important.

Accessories

To minimize warping when printing with Ultimaker CPE, apply a thin layer of glue to the glass plate using the glue provided in the accessory box of your 3D printer. In addition to the adhesive properties, the glue serves as a protective layer for the glass plate. Not using the glue results in a high risk of chipping the glass plate when removing the print.

The Advanced 3D Printing Kit for the Ultimaker 2+ or Ultimaker 3 includes special adhesion sheets to ensure adhesion to the glass plate.

Cura build plate adhesion

In preconfigured Ultimaker CPE Cura profiles, the default build plate adhesion method is a brim. A brim is made of a few extra printed lines around the 3D print on the initial layer to improve adhesion and avoid warping.

Printing conditions

Ultimaker CPE filament prints reliably, therefore additional accessories such as the front enclosure included in the Advanced 3D Printing Kit are not necessary, unless you are printing large or thin-walled objects. In this case, the front enclosure will help avoid cracks in your 3D prints and provides a controlled print environment for more consistent and reliable results.

Health and safety

Ultimaker CPE emits low levels of gasses and particles when used in accordance with the temperatures in the table above. To ensure a comfortable and healthy environment, we recommend 3D printing in a well-ventilated area.

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