Also known as Thermoplastic Polyurethane

TPU

Selective Laser Sintering [SLS]

Material info

About TPU

Thermoplastic Polyurethane, or TPU, is an industry-standard flexible, rubber-like material that is great for elastic end-use products. Printed using Selective Laser Sintering (SLS), a robust process that solidifies material layer-by-layer, TPU parts are durable and can include interlocking features.

Color & Finishes

Standard
This finish has a slightly rough surface and a matte finish.

Technology

  • Selective Laser Sintering [SLS]

Technical Documents

Material Properties

Tensile modulus (ISO 527)
60 MPa
Tensile strength (ISO 527)
7 MPa (XY), 5 MPa (Z)
Elongation at break (ISO 527)
250% (XY), 90% (Z)
Shore hardness
86 A

Description

Material Highlights
rubber-like flexibility, good impact, resistance durable

Design Guidelines

Bounding Box

Bounding Box Max
200 x 200 x 200 mm

Bounding Box Min
15 x 15 x 0.7 mm
X + Y + Z ≥ 15.0 mm

The bounding box is a 3D imaginary outline of a box that encloses the smallest area occupied by your model. Your model must be within the minimum and maximum bounding box sizes. If the size of the model is close to the maximum bounding box, then the printing orientation will be restricted.

Walls

Supported Wall Thickness Min
0.7 mm
Unsupported Wall Thickness Min
0.7 mm
A supported wall is connected at least on two sides of the wall, while an unsupported wall is connected only on one side of the wall. Walls that do not meet the minimum requirements may not survive printing and cleaning processes. Additionally, models may still be rejected based on the wall geometry of the model. Please consider the size of your model and reinforce the walls or add support structures as needed as minimum guidelines will not always be adequate for large models.

Wires

Supported Wires Min
1.0 mm
Unsupported Wires Min
2.0 mm
A wire is a circular, rectangular or even triangular feature that is thinner in its unconnected directions than its length. A supported wire is connected at least on two sides of the model, while an unsupported wire is connected on one side of the model. Wires that do not meet the minimum requirements may not survive printing and cleaning processes. Additionally, models may still be rejected based on the wire geometry of the model. Please consider the size of your model and reinforce the wires or add support structures as needed as minimum guidelines will not always be adequate for large models.

Details

Details Min Embossed
1.0 mm high & wide
Details Min Engraved
1.5 mm high & wide
For text, the ratio between width and depth, should be 1:1 and sans-serif fonts are preferred for line weight consistency.

Escape Holes

Single Escape Hole Diameter (Min)
4.0 mm
Multiple Escape Hole Diameter (Min)
3.0 mm
Escape holes are necessary to empty the support material of a hollow model. Two escape holes at the opposite ends of the model is optimal for the support removal process. Please consider the size of your model and make the escape holes bigger or add more escape holes as needed as minimum guidelines will not always be adequate for large models.
A single escape hole at the end of a cavity will not allow material in the corners near the escape hole to fully escape. So we recommend multiple escape holes at both ends of the cavity.

Clearance

Min
1.0 mm
Clearance is the space between two individual parts in a model. If the space among the individual parts do not meet the minimum clearance, then parts can fuse together or can be difficult to clean. This is important for movable pieces like hinges, gears, etc.

Sprues

1.5 mm thick, attached in at least 2 places per part

Sprues are wires that keep two or more parts together. Parts should be connected with a minimum of two sprues each. Please consider the size of your sprues and increase them as needed as minimum guidelines will not always be adequate for large models. If the sprues are within the guidelines and are broken, but there is no damage to your model, we will still ship them as is.

Interlocking & Enclosed Parts

Interlocking
Yes

Enclosed
Yes

Parts in File

Max
Up to 250

Accuracy

Accuracy ± 0.3- 0.7 mm for every 100 mm
For example: a product with dimensions of 50 x 50 x 100 mm can be up to 0.7 mm bigger or smaller in any direction.

Related Materials

Also known as SLS PA11, Nylon 11, EOS PA11, Nylon Polyamide 11
PA11
Application: External medical devices, automotive, sports equipment, loaded functional prototypes, hinges
Learn More →
Strong and Flexible, Nylon 12 Plastic, PA12, Polyamide, PA 2200
Versatile Plastic
Application: high strength & stiffness applications, skin contact applications, thin features and interlocking parts
Learn More →

Newsletter Sign up

Stay up to date on promotions, case studies, and more.