TPU filaments for 3D printing
TPU is the ideal material wherever you need flexibility, impact resistance and a long service life. It prints easily, holds its shape very well and withstands repeated bending and mechanical stress.
At Filamentor you will find the cheapest TPU filaments from the Smart print and Professional lab (Prof. lab) series. You get professional results and uncompromising quality at an unbeatable price, for hobby and professional printers alike.
Buying guide
TPU (thermoplastic polyurethane) is a flexible filament designed for printing parts that need to withstand bending, impacts, and mechanical wear. We offer material with a typical hardness of 95A, which is the ideal sweet spot between flexibility and good printability. We actively test both established brands, Smart Print and Prof. lab, on our own printers to guarantee a consistent 1.75 mm diameter. You can get quality material for your projects at a great price for a 1 kg spool.
Practical uses for TPU
Thanks to its high abrasion resistance and shock absorption, this flexible filament is perfect for specific technical applications where standard rigid plastics fail.
- Protective cases and covers for sensitive electronics.
- Flexible bumpers, vibration dampeners, and various seals.
- RC models, tires, and drone bumpers.
- Anti-slip pads and ergonomic tool handles.
Recommended print settings
Printing with flexible materials requires a specific approach. The key is a slower speed and proper extrusion settings.
| Parameter | Value |
|---|---|
| Nozzle temperature | 210 to 230 °C |
| Bed temperature | 0 to 60 °C |
| Enclosure | Not required |
| Print speed | 20 to 40 mm/s for Bowden, direct drive can handle more |
| Practical tip | Significantly reduce or completely disable retractions |
When to choose TPU and when to use PETG
You often ask whether to choose TPU filament or another technical plastic for a mechanically stressed part. TPU is the right choice when you need the print to be flexible, withstand repeated bending, and absorb shocks. Typical examples are caster wheels or bumpers. But if you need to print a stiff and rigid part that must keep its shape and not bend, go for PETG instead. This plastic is also tough and highly durable, but unlike TPU, it offers no elasticity.
Frequently asked questions
Can I print TPU on a printer with a Bowden setup?
Yes, printing is possible even on printers with a Bowden extruder, but it requires more patience. You need to lower the print speed to around 20 to 40 mm/s and minimize retractions so the material does not tangle in the feeder. Direct drive printers handle this material much more reliably and faster because the path between the drive gear and the nozzle is very short.
How do I make sure the print sticks well to the bed?
TPU filament naturally has excellent adhesion to most print surfaces, sometimes even too much. On a smooth PEI sheet, we recommend using a release agent, such as a glue stick or a dedicated 3D printing spray. This prevents potential damage to the bed when removing the finished part.
Do I need to dry the material before printing?
Polyurethane materials are highly hygroscopic, meaning they absorb moisture from the air very quickly. If you hear popping sounds during printing or the print has an ugly surface full of bubbles, we recommend drying the spool before use. Keeping the material in a dry box while printing ensures clean and strong prints.
Whether you are choosing material for technical prototypes or home projects, it always comes down to picking the right properties. If you are looking for a stiffer alternative for mechanical parts, check out our PETG filaments. For a complete overview of all available plastics and colors, visit the all filaments category, where you will find a solution for every printing task. If you are on a tight budget for your projects, you might also be interested in the cheap filaments section.