How to print with Ultimaker TPU 95A

TPU 95A (thermoplastic polyurethane) is Ultimaker’s semi-flexible material that can be used in a wide variety of engineering projects where performance is more important than aesthetic qualities. Although most flexible filaments are usually hard to print, Ultimaker TPU 95A is optimized for easier and faster printing without negatively affecting the layer bonding.

Please note that the preconfigured Cura profiles for Ultimaker TPU 95A have been exclusively developed for the Ultimaker 2+ and Ultimaker 2 Extended+. The instructions on this page are for these 3D printers only. Printing with this material on other Ultimaker 3D printers is at the user's risk; it is not supported and it may void the warranty. Always use the latest version of Cura (2.1.3 or higher) and make sure that your 3D printer is updated with the latest firmware version to include the correct material profile for Ultimaker TPU 95A.

Recommended Settings

Temperatures

For printing Ultimaker TPU 95A, a nozzle temperature of 235 °C and build plate temperature of 70 °C are recommended. There is no Cura profile for Ultimaker TPU 95A for a nozzle of 0.8 mm diameter, as the resulting quality is not up to Ultimaker standards.

Nozzle diameter (mm) Nozzle temperature (°C)  Build plate temperature (°C)  Print cooling fan speed (%)  
0.252357035
0.42357035
0.62357035

The temperatures listed in the table are used for the Ultimaker 2+ and Ultimaker 2 Extended+. For best results, it is crucial to select the right printer, nozzle diameter and material in Cura. Also, make sure you have selected the correct material on your Ultimaker 3D printer to automatically use the corresponding temperatures.

Cooling

For the most consistent print quality, the print cooling fan speed is set to 35 %. To ensure this quality is retained throughout the whole print, the print cooling fan speed will increase gradually to 60% for shorter layers.

Cura Adhesion Settings

A brim is the default build plate adhesion method in the Ultimaker TPU 95A print profiles in Cura. A brim is made of extra lines printed around your model to ensure successful adhesion.

Retraction Distance

Ultimaker TPU 95A is a semi-flexible material and therefore the retraction distance is higher than for other materials. By default, the filament will retract 10.0 mm instead of 6.5 mm. Models that don’t require many retractions may benefit from decreased retraction distance.

We do not recommend increasing the retraction distance above 10 mm, as this can lead to failure of your print in cases with a high number of retractions.

Adhesion

In most instances, extra adhesives are not necessary for a successful print. For even better build plate adhesion, apply a thin layer of glue (included in the accessory box of your 3D printer) to the glass plate.

For more tips on how to improve the build plate adhesion, see this page.  

Accessories

Printing with Ultimaker TPU 95A doesn’t require any additional accessories. However, you can try the door included in the Advanced 3D Printing Kit to obtain more consistent and reliable results. Do not use the adhesion sheets provided in this kit; for Ultimaker TPU 95A, the adhesion is so strong that the sticker will tear after the removal of the first 3D print.

Health and Safety

Ultimaker TPU 95A is safe to print when using the recommended temperature settings listed above. To ensure a comfortable and healthy environment, we recommend 3D printing in a well-ventilated area.

For more information, download the safety data sheet for Ultimaker TPU 95A here.

NOTE: The information provided here applies to Ultimaker TPU 95A, but may apply to TPU 95A filaments from other suppliers. The use of TPU 95A from other suppliers is not covered by the Ultimaker warranty.

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