TPU (Thermoplastic Polyurethane) is one of the most popular flexible materials in 3D printing. It allows makers to create parts that are elastic, impact-resistant, and durable, such as phone cases, gaskets, wearables, and functional prototypes.
However, TPU behaves very differently from rigid materials like PLA or PETG. Its flexibility means that printing settings must be carefully tuned to avoid issues like stringing, under-extrusion, or filament tangling. TPU printing settings can significantly affect print quality, especially for flexible materials like TPU 95A or TPU 85A filament.
In this guide, we’ll walk through the best TPU printing settings for 2026, including speed, temperature, retraction, and printer type recommendations.
If you’re new to flexible materials, you may also want to read our full guide:
👉 What is TPU Filament?
👉 TPU for 3D Printing Complete Material Guide
Quick Answer: Best TPU Printing Settings
If you’re looking for a quick starting point, the following TPU printing settings work well for most TPU 95A filaments and flexible materials used in FDM 3D printing.
| Setting | Recommended Range |
| Nozzle Temp | 210–250°C |
| Bed Temp | 35 – 50°C |
| Print Speed | 20–80 mm/s |
| Retraction Distance | 0–2 mm |
| Retraction Speed | 15–30 mm/s |
| Cooling Fan | 30–80% |
| Infill Speed | 10–30 mm/s |
These TPU printing settings work well for most TPU 95A flexible filaments used in modern FDM 3D printers. Always fine-tune based on your printer and filament brand.
Why TPU Requires Different Printing Settings
- Filament compression inside the extruder
When pushed through the extruder gears, TPU can compress instead of feeding smoothly, which may cause inconsistent extrusion. - Increased risk of stringing
Because TPU is soft and sticky when melted, it tends to ooze more easily than PLA. - Feeding difficulty in Bowden systems
Long filament paths in Bowden setups can cause TPU to bend or buckle, which is why print speed and retraction need careful adjustment.
Understanding these characteristics helps explain why TPU printing settings usually favor slower speeds and minimal retraction.
Recommended TPU Printing Settings
Below are the most important parameters to adjust when printing TPU.
💡 Nozzle Temperature
We recommend starting at: 210–250°C
TPU generally prints well in this temperature range. Higher temperatures improve layer bonding but may increase stringing.
Recommended starting points:
- TPU 85A: 220–235°C
- TPU 95A: 210–230°C
For high-flow TPU, slightly lower temperatures may still provide good extrusion.
💡 Bed Temperature
Recommended range: 35–50°C
TPU usually adheres well to most build surfaces, including:
- PEI sheets
- Textured plates
- Glass with glue stick
If adhesion is too strong, lowering the bed temperature can help with part removal.
💡 Print Speed
Traditional TPU prints best at: 20–80 mm/s
Printing TPU too fast can cause feeding problems. Slower speeds allow the filament to move smoothly through the extruder.
Typical speed ranges:
| Print Type | High-detail prints | General prints | High-flow TPU |
| Speed | 20–30 mm/s | 50 – 90mm/s | Up to 200mm/s |
💡 Retraction Settings
TPU generally requires minimal retraction.
Excessive retraction can cause the flexible filament to jam or deform inside the extruder.
Recommended starting points:
| Parameter | Retraction Distance | Retraction Speed |
| Value | 0–2 mm | 15–30 mm/s |
Reducing retraction is often the most effective way to minimize TPU printing issues.
💡 Cooling Fan
Recommended: 30–80%
Cooling improves surface quality and reduces stringing. However, too much cooling may reduce layer adhesion for large flexible parts.
A good starting setup is:
- First layer: 0–30%
- Remaining layers: 70–100%
TPU Print Speed vs Shore Hardness
Not all flexible TPU filaments print at the same speed. One of the biggest factors affecting printing performance is Shore hardness.
In general, softer TPU requires slower printing speeds, while harder TPU can usually be printed faster and more reliably.
| 3D Printing Material | Typical Shore Hardness | Recommended Speed |
| TPU 85A | Very flexible | 15–30 mm/s |
| TPU 95A | Medium flexibility | 30–60 mm/s |
| High-Speed TPU 95A | Optimized for extrusion | 60–200 mm/s (printer/material dependent) |
| PEBA | Ultra flexible | 15–30 mm/s |
Softer filaments like TPU 85A or PEBA tend to compress more inside the extruder, which makes stable extrusion harder at higher speeds. Harder materials such as TPU 95A strike a balance between flexibility and printability.
Understanding the relationship between Shore hardness and printing speed helps you choose the right material and settings for your application.
For makers who want to push TPU printing speeds higher without sacrificing flexibility, high-flow TPU formulations can make a big difference. Materials such as iSANMATE High Flow TPU 95A are engineered to improve melt flow stability, allowing reliable extrusion at speeds up to 200 mm/s on modern high-speed printers like Bambu Lab systems. You can see the full performance results in our TPU 95A High Flow Printing Test Report.
If you want to understand how flexibility affects material performance, you can also check our TPU 85A vs TPU 95A vs PEBA Bounce Test.
Direct Drive vs Bowden Extruder
The extruder type plays a major role in TPU printing performance.
| Extruder Type | Recommended Speed | Retraction | Stringing |
| Direct Drive | 30–60 mm/s | 0–1 mm | Less |
| Bowden | 20–30 mm/s | 1–2 mm | More |
Direct drive systems are generally better for TPU because the filament path is shorter and provides better control.
Bowden printers can still print TPU successfully, but slower speeds are recommended.
Best TPU Settings for Popular Printers
Below are common starting profiles used by many makers.
📌 Bambu Lab Printers
- Nozzle: 220°C
- Bed: 35°C
- Speed: 40–60 mm/s
- Retraction: 0.6–0.8 mm
📌 Creality Ender Series
- Nozzle: 220–225°C
- Bed: 50°C
- Speed: 20–30 mm/s
- Retraction: 1–2 mm
📌 Prusa Printers
- Nozzle: 215–225°C
- Bed: 45°C
- Speed: 30–40 mm/s
- Retraction: 0.8–1.2 mm
These values are starting points and may vary depending on the filament brand and printer calibration.
TPU Printing Settings Cheat Sheet
| Setting | Beginner | Balanced | High-Speed TPU |
| Nozzle Temp | 215°C | 220°C | 225°C |
| Bed Temp | 35°C | 50°C | 50°C |
| Print Speed | 20–30 mm/s | 40–60 mm/s | 80–200 mm/s |
| Retraction Distance | 0–1 mm | 0.5–1.5 mm | 0–1 mm |
| Cooling Fan | 50% | 70% | 80% |
TPU vs PLA vs PETG Printing Settings
| 3D Printing Material | Printing Speed | Retraction | Printability |
| PETG | 40–120 mm/s | 2–5 mm | Easy |
| PLA | 60–200 mm/s | 1–3 mm | Easy |
| TPU | 20–80 mm/s | 0–2 mm | Challenging |
Common TPU Printing Problems
Even with correct settings, TPU can still present some common challenges.
📍 Stringing
Usually caused by:
- Too high temperature
- Too much retraction
Solutions:
- Lower nozzle temperature slightly
- Reduce retraction distance
📍 Under-extrusion
Possible causes:
- Print speed too high
- Filament compression in the extruder
Solutions:
- Reduce print speed
- Check extruder tension
📍 Filament tangling
Flexible filaments can occasionally bend in the feeder path.
Solutions:
- Ensure a smooth filament path
- Use a direct drive extruder when possible
Preparing TPU Filament Before Printing
Proper filament preparation greatly improves TPU printing success.
✅ Drying
TPU is hygroscopic, meaning it absorbs moisture from the air. Wet TPU may cause:
- Stringing
- Bubbles
- Inconsistent extrusion
Recommended TPU drying conditions:
- Drying temperature: 60–80°C
- Drying time: 5–8 hours
✅ Storage
To keep TPU in good condition:
- Store filament in sealed bags
- Use desiccant packs
- Avoid long exposure to humid environments
Recommended TPU Filament
If you’re looking for a TPU optimized for smoother extrusion and higher printing speeds, iSANMATE TPU 95A HF Filament is designed for reliable flexible printing. You can see the detailed results in our TPU 95A HS Printing Test Report.
Key features include:
- Balanced flexibility and durability
- Improved flow performance
- Stable extrusion for modern high-speed printers
This makes it suitable for applications such as:
- Protective cases
- Wearable components
- Flexible mechanical parts
Common Flexible TPU Filament FAQ
🔎 What speed should TPU be printed?
- Traditional TPU: 20–40 mm/s
- High-Flow TPU: 60–200 mm/s
🔎 Do you need retraction for TPU?
Yes, but very little retraction is recommended. Typical settings are 0–2 mm with slower retraction speeds.
🔎 Can TPU be printed fast?
Traditional TPU is best printed slowly. However, high-flow TPU materials can support higher speeds on modern printers. With iSANMATE High Flow TPU 95A , speeds up to 200 mm/s are possible without compromising print quality.
🔎 Does TPU need drying?
Yes. Because TPU absorbs moisture easily, drying the filament at 60–80°C for several hours helps ensure consistent print quality.
