The best TPU filament unlocks a category of 3D printed objects that PLA, PETG, and ABS simply can’t produce โ flexible, rubber-like parts that bend, stretch, compress, and return to their original shape. Phone cases that absorb impact. Gaskets that seal against irregular surfaces. Wheels that grip. Watch bands that flex with your wrist. Living hinges that open and close thousands of times without cracking. These are the applications that make TPU worth learning, and the material is more capable than most beginners expect.
TPU also has a reputation for being difficult to print โ and that reputation isn’t entirely undeserved. The same flexibility that makes TPU parts useful also makes the filament itself prone to buckling in Bowden extruders, tangling on direct drive setups if fed too fast, and stringing more aggressively than rigid materials. But on modern direct drive printers like the Bambu Lab A1 Mini, P1S, and H2C, TPU has become significantly more approachable than it was even two years ago. The hardware has caught up with the material.
This guide covers the six best TPU filaments for 3D printing in 2026 โ ranked across printability, flexibility, dimensional accuracy, and value. We own and use Bambu Lab enclosed and open-frame printers daily, which grounds these recommendations in the hardware context that matters most for TPU printing. Whether you’re printing your first flexible part or looking to upgrade your TPU stock, there’s a pick here for your situation.
Before diving in: TPU requires specific printer settings that differ significantly from PLA and PETG. If you’re new to material settings in Bambu Studio, our Bambu Studio Beginner’s Guide covers filament profiles and print settings in detail. For a complete look at how TPU compares to other flexible and functional materials, our 3D Printing Troubleshooting Guide covers material-specific failure modes and fixes.
Quick Picks: Best TPU Filament for 3D Printing
- Best Overall: Polymaker PolyFlex TPU95
- Best for Beginners: Hatchbox TPU
- Best Value: SUNLU TPU
- Best for Creality Printers: Creality CR-TPU
- Best Rising Brand: Elegoo TPU
- Best for High-Speed Printing: Overture High Speed TPU 95A
What Is TPU and Why Should You Print With It?
TPU stands for Thermoplastic Polyurethane โ a class of flexible, rubber-like plastics that can be processed through standard FDM 3D printers. Unlike rigid filaments like PLA, PETG, and ABS, TPU produces parts that flex, compress, and stretch without breaking, then return to their original shape when the force is removed. It’s the material that bridges the gap between rigid 3D printed parts and the rubber or silicone components you’d normally have to order from a manufacturer.
Shore hardness is the key specification for TPU. It measures how resistant the material is to permanent indentation โ essentially, how firm or soft the final print will be. The most common shore hardness for hobbyist FDM printing is 95A โ firm enough to hold its shape and print reliably, flexible enough to bend significantly without cracking. This is the shore hardness all six products on this list share, and it’s the right starting point for anyone new to TPU.
Softer formulations like 87A produce more rubber-like parts with greater flexibility and stretch. They’re ideal for applications like shoe insoles, very soft grips, and wearables โ but they’re also significantly more challenging to print and require either a well-tuned direct drive extruder or specialized printer hardware. We’ll cover 87A in a dedicated future article. For now, 95A is where to start.
What Can You Make With TPU?
The applications for TPU 95A are wide and genuinely useful for hobbyists who’ve been waiting for a reason to learn a new material:
Phone cases: The most popular TPU print by volume. A custom-fit phone case in TPU protects against drops, grips in hand, and can be designed to your exact specification. This is the application that convinces most beginners to try TPU for the first time.
Gaskets and seals: TPU’s compression properties make it ideal for sealing applications โ waterproof enclosure gaskets, camera mount dampeners, vibration isolators. These are functional parts that rigid materials simply cannot replicate.
Wheels and treads: RC car tires, robot wheels, caster wheel covers โ TPU’s grip and wear resistance make it the right material for any rolling or sliding contact surface.
Watch bands and straps: Custom TPU watch bands are a popular maker project โ comfortable against skin, washable, and fully customizable in fit and design.
Cable management: Flexible clips, strain reliefs, and cable ties in TPU last significantly longer than rigid alternatives that crack with repeated flexing.
Living hinges: Thin TPU sections that flex repeatedly without fatiguing โ useful for snap-fit enclosures, fold-flat designs, and packaging prototypes.
Wearable props and cosplay: Armor pieces, padding, and flexible structural elements that need to flex with movement rather than crack when bent.
TPU vs PLA vs PETG โ When Does TPU Win?
TPU earns its place when your application specifically requires flexibility, impact absorption, or rubber-like compression. For everything else, PLA and PETG are easier to print and cover the majority of functional part use cases.
Choose TPU when: the part needs to flex repeatedly without cracking, the application involves impact absorption or grip, you need a soft-touch surface finish, or the part needs to seal against an irregular surface. Phone cases, wheels, gaskets, and straps all fall into this category.
Choose PLA or PETG when: you need dimensional rigidity, the part supports structural loads, or you’re printing for display rather than function. TPU’s flexibility that makes it useful for flexible applications actually makes it less suitable for structural components where rigidity is the requirement.
For a complete material selection guide, our Best PETG Filament guide covers the PETG vs PLA decision in detail, and our Best ABS Filament guide covers when ABS’s heat resistance and toughness are needed. Together with this TPU guide, you have the complete picture for choosing the right material for any print.
What to Look for in a TPU Filament
Shore hardness: For a first TPU purchase, 95A is the right choice. It’s printable on most direct drive FDM printers, produces firm-yet-flexible parts, and covers the widest range of applications. Verify the shore hardness before purchasing โ not all TPU products clearly label this, and mixing up 95A and 87A will produce very different results.
Dimensional accuracy: Same standard as other filaments โ ยฑ0.02โ0.03mm. TPU is particularly sensitive to diameter inconsistency because its flexibility means the filament can bunch or buckle under slight resistance in the feed path. Tight tolerances reduce this risk significantly.
Moisture packaging: TPU absorbs moisture readily and produces surface bubbles and poor layer adhesion when wet. Vacuum-sealed packaging with desiccant is essential โ particularly for TPU that will be stored between print sessions rather than used immediately. Always dry TPU before printing if it’s been sitting open.
Printer compatibility: TPU prints best on direct drive extruder printers. Bowden tube setups โ where the extruder motor is remote from the hotend โ can cause TPU to buckle in the tube path because the flexible filament can’t transmit push force efficiently over a long distance. Bambu Lab’s A1 Mini, P1S, and H2C all use short-path direct drive systems that handle TPU reliably. If you’re on a Bowden setup, TPU printing is possible but requires specific settings and may need hardware modifications.
Print speed rating: Standard TPU formulations print reliably at 20โ40mm/s โ significantly slower than PLA or PETG. High-speed TPU formulations (like Overture’s HS TPU) are engineered to print at 60โ90mm/s while maintaining flexibility and layer adhesion. If you print at Bambu Lab’s default high speeds, a high-speed TPU formulation is worth the premium.
The 6 Best TPU Filaments for 3D Printing (2026)
1. Polymaker PolyFlex TPU95 โ Best Overall
Bottom line: Polymaker’s PolyFlex TPU95 is the most consistently recommended TPU filament in the hobbyist 3D printing community, and it earns that reputation through tight dimensional accuracy, excellent printability across a wide range of printer types, and the kind of consistent quality that Polymaker delivers across their entire filament line. If you’re choosing the best TPU filament for your first roll, this is where to start.
PolyFlex TPU95 is engineered specifically for FDM printing with a formulation that balances flexibility and printability โ it’s soft enough for genuinely rubber-like parts while remaining stiff enough to feed reliably through the extruder without buckling. Dimensional accuracy comes in at ยฑ0.02mm, matching Polymaker’s premium PETG and PLA specs, which translates to consistent extrusion and clean surface finish across a print session.
Printability is where PolyFlex particularly distinguishes itself. Many TPU filaments require aggressive speed reduction and careful retraction tuning to print without stringing or surface artifacts. PolyFlex’s formulation is notably more forgiving โ it prints cleanly at 30โ45mm/s with standard retraction settings on most direct drive printers, and Polymaker provides detailed slicer profiles for Bambu Studio and other major slicers that give you a reliable starting point without profile tuning.
The filament arrives vacuum-sealed on a cardboard spool with desiccant โ adequate moisture protection for most users, though in humid environments transferring to a dryer quickly after opening is recommended. For more on filament drying for TPU specifically, our Best Filament Dryers guide covers the right drying temperatures and duration for flexible filaments.
PolyFlex is compatible with the full Bambu Lab lineup โ A1 Mini, P1S, H2C, and X1 Carbon โ as well as most other direct drive FDM printers. One important note for Bambu Lab users: Bambu Lab officially advises against running TPU through the AMS or AMS Lite due to the material’s flexibility causing feeding issues. Use the external spool holder for all TPU printing on Bambu machines.
Specs at a glance:
- Shore hardness: 95A
- Diameter: 1.75mm
- Dimensional accuracy: ยฑ0.02mm
- Nozzle temp: 220โ240ยฐC
- Bed temp: 30โ60ยฐC
- Print speed: 20โ40mm/s recommended
Pros: Excellent community track record, forgiving printability, tight ยฑ0.02mm tolerance, Polymaker slicer profiles available, vacuum sealed with desiccant
Cons: Cardboard spool โ move to dryer quickly in humid environments; standard speed rating requires slower printing than high-speed alternatives
2. Hatchbox TPU โ Best for Beginners
Bottom line: Hatchbox has earned its reputation as one of the most beginner-friendly filament brands across every material category, and their TPU is no exception. Consistent quality, forgiving print settings, and one of the deepest community bases of any filament brand make Hatchbox TPU the safest starting point for a first flexible print.
Hatchbox TPU 95A prints reliably across a wide range of direct drive printer setups and responds predictably to standard temperature and speed adjustments. For a beginner navigating TPU’s quirks for the first time โ learning the right speed, retraction approach, and cooling settings โ Hatchbox’s consistency reduces the number of variables you’re managing simultaneously. When something goes wrong, you can be more confident it’s a settings issue rather than a filament quality issue.
Dimensional accuracy comes in at ยฑ0.05mm โ slightly looser than Polymaker but consistent with what Hatchbox delivers across their product line. In practice this produces reliable prints for the majority of TPU applications including phone cases, gaskets, and flexible structural parts. The filament arrives vacuum-sealed with desiccant, and Hatchbox’s extensive community presence means forum discussions covering specific printer and Hatchbox TPU settings combinations are easy to find.
For users printing on a Bambu Lab A1 Mini or Creality Ender 3 V3 KE who want a TPU that doesn’t require premium pricing or extensive profile tuning, Hatchbox is the first filament I’d recommend trying.
Specs at a glance:
- Shore hardness: 95A
- Diameter: 1.75mm
- Dimensional accuracy: ยฑ0.05mm
- Nozzle temp: 210โ230ยฐC
- Bed temp: 30โ60ยฐC
- Print speed: 20โ30mm/s recommended
Pros: Proven community track record, forgiving print settings, vacuum sealed with desiccant, wide printer compatibility, strong community settings library
Cons: Slightly looser tolerance than premium picks; lower speed ceiling than high-speed formulations
3. SUNLU TPU โ Best Value
Bottom line: SUNLU is a proven budget filament brand and their TPU delivers reliable flexible printing at the lowest per-kg cost on this list. For hobbyists who want to experiment with TPU without committing to a premium price point, SUNLU is the practical first purchase.
SUNLU TPU 95A prints within the standard TPU temperature range and is compatible with all direct drive FDM printers. Dimensional accuracy is rated at ยฑ0.02mm โ impressively tight for the price point, matching Polymaker’s spec at a significantly lower per-spool cost. The filament ships vacuum-sealed with desiccant, which is particularly important for TPU given the material’s moisture sensitivity.
SUNLU TPU has developed a solid community reputation for consistent quality within its price class. It produces clean, flexible prints across the standard range of TPU applications โ phone cases, gaskets, and flexible parts โ without the premium associated with Polymaker’s brand positioning. Print speed is limited to the standard TPU range (20โ35mm/s), so if you’re printing at Bambu Lab’s default high speeds you’ll need to configure a TPU-specific speed profile regardless of brand.
SUNLU’s filament dryer ecosystem is worth calling out here โ if you’re already using a SUNLU S1 Plus dryer, running SUNLU TPU through their own drying system is a natural pairing. TPU benefits from a 4โ6 hour dry cycle at 45โ55ยฐC before printing โ don’t exceed 60ยฐC as excessive heat can affect TPU’s flexibility characteristics.
Specs at a glance:
- Shore hardness: 95A
- Diameter: 1.75mm
- Dimensional accuracy: ยฑ0.02mm
- Nozzle temp: 220โ235ยฐC
- Bed temp: 30โ60ยฐC
- Print speed: 20โ35mm/s recommended
Pros: Lowest per-kg cost on the list, tight ยฑ0.02mm tolerance for the price, vacuum sealed with desiccant, broad printer compatibility
Cons: Standard speed rating only; less community history than Hatchbox or Polymaker
4. Creality CR-TPU โ Best for Creality Printers
Bottom line: Creality’s own TPU filament is tuned to work optimally with their printer lineup and delivers reliable flexible prints with solid layer adhesion at a competitive price point. For Creality printer owners who want a TPU that pairs naturally with Creality Print slicer profiles, CR-TPU is the straightforward choice.
Like Bambu Lab’s approach to their own filament, Creality formulates CR-TPU with their hardware in mind. Temperature profiles and flow characteristics are optimized for the K2 Combo, SparkX i7, and Ender 3 series. If you’re printing on a Creality SparkX i7 or K2 Combo, Creality’s built-in TPU profiles in Creality Print give you a reliable starting point without manual calibration.
CR-TPU emphasizes resilience and adhesive properties โ the formulation is designed to produce parts with excellent layer-to-layer bonding that hold up under repeated flexing and compression cycles. This makes it particularly suitable for functional TPU applications like phone cases, cable strain reliefs, and mechanical dampeners where long-term durability under cycling loads matters.
Dimensional accuracy is rated at ยฑ0.05mm, consistent with what Creality delivers across their filament line. The profile synergy advantage is Creality-specific, but CR-TPU works perfectly well on other direct drive printers โ just with less out-of-box profile convenience.
Specs at a glance:
- Shore hardness: 95A
- Diameter: 1.75mm
- Dimensional accuracy: ยฑ0.05mm
- Nozzle temp: 220โ235ยฐC
- Bed temp: 30โ60ยฐC
- Print speed: 20โ40mm/s recommended
Pros: Optimized for Creality printers, excellent resilience and layer adhesion, competitive price, good for high-cycle functional parts
Cons: Profile advantage is Creality-specific; slightly looser tolerance than Polymaker or SUNLU
Check the Creality CR-TPU Price on Amazon
5. Elegoo TPU โ Best Rising Brand
Bottom line: Elegoo has built a strong reputation in the 3D printing space through their Neptune printer line and resin products, and their TPU filament carries that engineering credibility into the flexible filament category. Competitive specs, broad compatibility, and Elegoo’s growing community presence make this a legitimate alternative to the more established names on this list.
Elegoo TPU 95A is formulated for flexibility and printing reliability across standard direct drive FDM setups. The filament targets strong inter-layer adhesion โ critical for TPU parts that will be flexed repeatedly, since delamination at layer boundaries is the most common failure mode for flexible prints under cycling stress. Print temperatures fall within the standard TPU range, and the filament is compatible with Bambu Lab printers, Creality machines, and most other direct drive setups.
For users printing on an Elegoo Neptune 4 Plus, Elegoo’s own TPU is the natural first choice โ the formulation is engineered for Elegoo hardware and the brand alignment means community settings discussions are directly applicable to your printer. The Neptune 4 Plus’s direct drive extruder handles TPU well, making it a capable TPU printer that this filament complements naturally.
As with the ABS article, Elegoo’s newer FDM filament line has less community history than Hatchbox or Polymaker โ but the hardware credibility and competitive pricing make it worth serious consideration, particularly for Elegoo printer owners.
Specs at a glance:
- Shore hardness: 95A
- Diameter: 1.75mm
- Dimensional accuracy: ยฑ0.02mm
- Nozzle temp: 220โ235ยฐC
- Bed temp: 30โ60ยฐC
- Print speed: 20โ40mm/s recommended
Pros: Tight ยฑ0.02mm tolerance, excellent layer adhesion, competitive price, natural fit for Elegoo printer users, strong brand credibility
Cons: Newer FDM filament brand with less community history; fewer third-party profile references than Hatchbox or Polymaker
6. Overture High Speed TPU 95A โ Best for High-Speed Printing
Bottom line: Standard TPU’s most significant practical limitation is print speed โ most formulations max out at 30โ40mm/s, which makes TPU prints significantly longer than equivalent PLA or PETG jobs. Overture’s High Speed TPU 95A is specifically engineered to break that ceiling, printing reliably at 60โ90mm/s while maintaining the flexibility and layer adhesion that make TPU useful in the first place.
The speed advantage is the entire value proposition here. On a Bambu Lab P1S or H2C running at default speeds, standard TPU requires creating a heavily reduced-speed profile that underutilizes the printer’s capabilities. Overture HS TPU closes that gap significantly โ it’s pre-dried before packaging, vacuum-sealed, and formulated with a clog-free design that prevents the jamming issues that plague standard TPU at higher speeds.
Community feedback on Overture HS TPU is genuinely enthusiastic โ users who switch from standard TPU to high-speed formulations consistently report it as a meaningful workflow improvement. The speed difference on a complex phone case or multi-part flexible assembly is significant: a print that takes 3โ4 hours at 30mm/s might complete in under an hour at 80mm/s with comparable quality.
Dimensional accuracy is rated at ยฑ0.02mm โ matching Polymaker’s spec โ and the 95A shore hardness produces the same firm-yet-flexible part characteristics as standard TPU. The main consideration is that high-speed TPU requires a printer capable of handling the speeds โ Bambu Lab’s lineup is ideal, as are other modern direct drive machines with input shaping and robust extruder designs. Older or slower printers won’t see the benefit of the HS formulation.
This is a Creator Connections product โ check the current campaign link for pricing.
Specs at a glance:
- Shore hardness: 95A
- Diameter: 1.75mm
- Dimensional accuracy: ยฑ0.02mm
- Nozzle temp: 220โ240ยฐC
- Bed temp: 25โ60ยฐC
- Print speed: 60โ90mm/s rated
Pros: Up to 5x faster than standard TPU, pre-dried and vacuum sealed, clog-free formula, tight ยฑ0.02mm tolerance, ideal for Bambu Lab high-speed workflows
Cons: Speed advantage only realized on fast printers with direct drive; premium price over standard TPU; less community history than standard Overture TPU
TPU Filament Comparison: At a Glance
| Filament | Shore | Accuracy | Max Speed | Best For |
|---|---|---|---|---|
| Polymaker PolyFlex TPU95 | 95A | ยฑ0.02mm | 40mm/s | Best overall / print quality |
| Hatchbox TPU | 95A | ยฑ0.05mm | 30mm/s | Beginners |
| SUNLU TPU | 95A | ยฑ0.02mm | 35mm/s | Best value |
| Creality CR-TPU | 95A | ยฑ0.05mm | 40mm/s | Creality printer users |
| Elegoo TPU | 95A | ยฑ0.02mm | 40mm/s | Elegoo printer users |
| Overture HS TPU 95A | 95A | ยฑ0.02mm | 90mm/s | High-speed printing |

How to Print TPU Successfully โ Complete Settings Guide
TPU has a reputation for being difficult, and that reputation comes from specific failure modes that are entirely avoidable with the right settings. Here’s everything you need to know to get clean, reliable TPU prints from your first attempt.
Use a Direct Drive Extruder
This is the single most important hardware requirement for TPU printing. Direct drive extruders โ where the extruder motor sits directly above the hotend โ handle TPU’s flexibility without the buckling issues that plague Bowden tube setups. The Bambu Lab A1 Mini, P1S, H2C, and Elegoo Neptune 4 Plus all use direct drive or short-path extrusion systems that handle TPU well. If you’re on a long Bowden tube printer (some older Creality models), TPU printing is more challenging and may require aftermarket hardware modifications.
Slow Down
Standard TPU 95A prints reliably at 20โ40mm/s. This is significantly slower than PLA (which Bambu Lab printers handle at 200โ300mm/s) but produces clean, consistent results. Don’t try to push standard TPU faster โ the filament will buckle or produce stringing artifacts before it reaches PLA speeds. Create a dedicated TPU speed profile in Bambu Studio rather than modifying your standard PLA profile. The Overture HS TPU covered above is the exception โ if speed is a priority, start with a high-speed formulation rather than trying to force standard TPU faster.
Minimize or Disable Retraction
Retraction โ pulling the filament back into the nozzle before travel moves to prevent stringing โ works differently with TPU than with rigid filaments. TPU’s flexibility means aggressive retraction can cause the filament to compress and buckle in the feed path rather than pulling back cleanly. Start with minimal retraction (1โ2mm at 20โ30mm/s on direct drive setups) or disable it entirely on short travel moves. Some users find that disabling retraction completely and using high travel speeds to minimize stringing produces the best results on TPU.
Keep the Part Fan Low
Like PETG, TPU benefits from reduced part cooling. Excessive cooling reduces inter-layer adhesion โ which is critical for flexible parts that will be flexed repeatedly. Start with 30โ50% fan speed and adjust based on results. On enclosed Bambu Lab printers, the default TPU profile handles fan speed appropriately.
Print Temperature
Most TPU 95A filaments print between 220โ240ยฐC. Start at the lower end of your filament’s recommended range and increase if you’re seeing poor layer adhesion or under-extrusion. Higher temperatures increase stringing risk on TPU โ find the lowest temperature that produces solid layer adhesion and stay there.
Bed Adhesion
TPU adheres well to textured PEI surfaces โ the same surface that works for PETG. Smooth PEI may cause TPU to bond too aggressively, making removal difficult. A clean textured PEI surface at 40โ60ยฐC provides excellent first-layer adhesion with clean release once cooled. No glue stick or release agent is needed on textured PEI for most TPU prints.
Don’t Use the AMS with TPU
Bambu Lab officially advises against running TPU through the AMS or AMS Lite. TPU’s flexibility causes feeding issues in the AMS mechanism โ the filament can’t transmit the push force required for reliable multi-spool operation. Use the external spool holder for all TPU printing on any Bambu Lab machine. This applies to all TPU brands and formulations.
Dry Your Filament
TPU absorbs moisture readily and the effects are visible โ surface bubbles, rough layer finish, and poor layer adhesion are all signs of wet TPU. Dry at 45โ55ยฐC for 4โ6 hours before printing. Don’t exceed 60ยฐC as excessive heat can affect the material’s flexibility properties. For storage between print sessions, keep TPU sealed with desiccant โ it reabsorbs moisture faster than PLA or ABS. Our Best Filament Dryers guide covers the right drying setup for flexible filaments.
Understanding TPU Shore Hardness
All six products on this list are 95A shore hardness โ the standard for hobbyist FDM TPU printing. But understanding what shore hardness means in practice will help you evaluate future TPU purchases and understand when a softer formulation might be appropriate.
The Shore A scale measures indentation hardness in flexible materials. Lower numbers = softer and more flexible. Higher numbers = firmer and more rigid. Here’s how common shore hardnesses compare in practical terms:
85A: Very soft and stretchy โ similar to a rubber band or soft eraser. Excellent flexibility and grip but challenging to print. Requires very slow speeds and an extremely well-tuned direct drive extruder. Best for soft grips, shoe insoles, and wearables where maximum softness is the priority.
95A: Firm yet flexible โ similar to a hard rubber or shoe sole. The sweet spot for most hobbyist applications. Printable on most modern direct drive FDM printers with appropriate settings. Covers phone cases, gaskets, wheels, watch bands, and the majority of flexible part applications. This is where to start.
98A: Very firm flexible โ similar to a hard rubber eraser or automotive seal. Less flexible than 95A but easier to print. Good for applications where some flexibility is needed but rigid-like surface feel is preferred.
For a dedicated comparison of 87A vs 95A shore hardness and when each is the right choice, we’ll be covering this in a follow-up article in the filament series.
Which TPU Filament Should You Buy?
You’re printing TPU for the first time: Polymaker PolyFlex TPU95 or Hatchbox TPU. Both are forgiving and well-documented. Polymaker edges ahead on dimensional accuracy; Hatchbox edges ahead on community settings availability.
You want the best value per kg: SUNLU TPU. Tight tolerance for the price, vacuum sealed, broad printer compatibility.
You print primarily on Creality hardware: Creality CR-TPU. Optimized for Creality profiles, excellent resilience for high-cycle functional parts.
You print primarily on an Elegoo Neptune: Elegoo TPU. Native ecosystem match, tight tolerance, strong layer adhesion.
You print on a Bambu Lab machine and want the fastest possible TPU workflow: Overture High Speed TPU 95A. Up to 5x faster than standard TPU, pre-dried, clog-free formula. The right choice when print time is a priority and you’re on hardware that can take advantage of the speed.
Final Verdict
The best TPU filament for most users is the Polymaker PolyFlex TPU95 โ it combines the tightest tolerances, the most forgiving print settings, and the deepest community support of any flexible filament at its price point. For beginners, Hatchbox TPU is the safer first choice due to its community documentation depth. And for Bambu Lab users who print TPU regularly, Overture High Speed TPU is the upgrade that makes flexible printing feel as efficient as printing in PLA.
TPU takes a print session or two to dial in โ don’t be discouraged if the first attempt strings or doesn’t come out perfectly. Slow down, minimize retraction, dry your filament, and check that you’re using the external spool holder on Bambu Lab printers. Once those fundamentals are in place, TPU becomes one of the most satisfying materials in the FDM toolkit โ unlocking a category of functional prints that no other common filament can produce.
For the complete filament progression โ from your first PLA print through PETG, ABS, and now TPU โ see our full filament series: Best PLA Filament, Best PETG Filament, and Best ABS Filament.
Frequently Asked Questions
What is the best TPU filament for 3D printing?
The best TPU filament for most users is Polymaker PolyFlex TPU95 โ it delivers tight dimensional accuracy, forgiving printability, and excellent community support at a competitive price point. For beginners, Hatchbox TPU is equally strong due to its extensive community settings documentation. For high-speed workflows on Bambu Lab printers, Overture High Speed TPU 95A is the upgrade worth considering.
Is TPU hard to print?
TPU has a reputation for being difficult, but on modern direct drive printers like the Bambu Lab A1 Mini, P1S, and H2C, it’s significantly more approachable than it used to be. The key requirements are a direct drive extruder, reduced print speed (20โ40mm/s for standard TPU), minimal retraction, and dry filament. Get those four things right and TPU prints reliably. The difficulty comes from trying to print TPU with settings optimized for rigid materials.
What shore hardness should I use for TPU?
95A is the right starting point for most hobbyist applications โ phone cases, gaskets, wheels, watch bands, and flexible structural parts. It’s firm enough to print reliably on most direct drive printers while being flexible enough for genuine rubber-like applications. Softer formulations like 87A produce more rubber-like parts but are significantly harder to print. Start with 95A and consider 87A only after you’ve successfully printed TPU 95A.
Can I print TPU through the Bambu Lab AMS?
No โ Bambu Lab officially advises against running TPU through the AMS or AMS Lite. TPU’s flexibility causes feeding issues in the AMS mechanism. Use the external spool holder for all TPU printing on any Bambu Lab machine. This applies to all TPU brands and formulations, including Bambu Lab’s own TPU if you purchase it through their website.
What temperature should I print TPU at?
Most TPU 95A filaments print between 220โ240ยฐC at the nozzle and 30โ60ยฐC at the bed. Start at the lower end of your filament’s recommended range and increase if you’re seeing poor layer adhesion. Higher temperatures increase stringing risk โ find the lowest temperature that produces solid layer adhesion. Textured PEI build surfaces work well for TPU at 40โ60ยฐC bed temperature.
Does TPU need to be dried before printing?
Yes โ TPU absorbs moisture readily and produces surface bubbles, rough layer finish, and weak inter-layer adhesion when wet. Dry at 45โ55ยฐC for 4โ6 hours before printing. Don’t exceed 60ยฐC as excessive heat can affect the material’s flexibility. Store between print sessions in a sealed container with desiccant. See our Best Filament Dryers guide for setup recommendations.
What’s the difference between TPU 95A and 87A?
Shore hardness measures how firm or soft a flexible material is. 95A is firmer โ similar to a hard rubber or shoe sole โ and is printable on most modern direct drive FDM printers. 87A is softer โ more rubber-band-like โ and produces greater flexibility and stretch, but is significantly harder to print and requires very slow speeds and a well-tuned extruder. Start with 95A. We’ll cover 87A vs 95A in a dedicated comparison article.
What is high-speed TPU and is it worth it?
High-speed TPU (like Overture HS TPU 95A) is a modified formulation that prints reliably at 60โ90mm/s compared to 20โ40mm/s for standard TPU. The speed advantage is real and significant โ a complex flexible print that takes 3โ4 hours at standard speed may complete in under an hour with HS TPU. It’s worth the premium if you print TPU regularly on a fast printer like the Bambu Lab P1S or H2C. On slower printers, the speed ceiling of the hardware limits the benefit of the HS formulation.
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