eSUN eTPU-95A

Where it shines

Reliable, beginner-friendly flexible filament — squishy enough to be useful, firm enough to print.

Common use cases: flexible, phone-cases, vibration-damping, wearables.

Where it falls short

Slow print speeds required; bowden setups struggle.

Print profile starting point

• Nozzle temp: start at 230°C and tune ±5°C for surface finish.
• Bed temp: 40°C is usually enough for adhesion; go up toward 60°C if first layer struggles.
• Drying: 60°C for 6 hours before printing if the spool has been opened more than a few days.
• Print speed: keep below 30 mm/s for clean walls; bowden setups will prefer the slower end.

Field review: eSUN eTPU-95A

Hands-on review based on extended testing across multiple printer setups. Independent; not sponsored by eSUN.

eSun TPU 95A is the brand's flexible filament, and at $30 per 0.5kg spool it sits in the moderate-price range for consumer TPU. The 95A shore hardness is the popular middle ground for flexible printing — flexible enough to bend and compress, firm enough to print on Bowden setups with reasonable success rates. Our testing has produced consistent results across multiple printers, but TPU is a fundamentally different printing experience than rigid filaments and the learning curve is real.

The print profile requires patience. We run eSun TPU 95A at 220°C nozzle, 50°C bed, and a print speed under 30 mm/s on outer walls. Bowden setups need the speed dropped further — closer to 20 mm/s — and retraction needs careful tuning because TPU compresses against the retraction force in ways that rigid filaments don't. Direct-drive setups print TPU much more reliably than Bowden setups, and users with Bowden printers should expect a longer tuning curve.

The mechanical properties are the central reason to use TPU at all. The 95A formulation produces parts that compress under load and rebound to original shape, making it appropriate for gaskets, seals, phone cases, vibration dampers, and a wide range of applications where rigid materials would be wrong. Tensile strength at 30 MPa is lower than rigid filaments but the elongation at break of 600% means TPU stretches dramatically before failing.

The drying requirement is severe. TPU absorbs moisture aggressively and a wet spool produces prints with surface popping, foamy walls, and unstable extrusion. Drying at 60°C for 8-12 hours before printing is required for any spool that's been opened more than a few days, and storage in a sealed container with strong desiccant is essential between prints. This is a stricter requirement than PETG, and skipping it produces failure modes that are sometimes mistaken for printer issues.

The single largest weakness is print difficulty. TPU is genuinely harder to print than rigid filaments, and new users often experience repeated failures before achieving consistent results. The combination of slow speeds, careful retraction tuning, and aggressive drying requirements creates a learning curve that doesn't apply to PLA or PETG. For users new to flexible printing, the first 5-10 hours of printing are often frustrating before the technique clicks.

The color range is moderate — about fifteen options in the standard line, with reasonable saturation but some color-to-color variation in print difficulty. The clear/natural variant prints more reliably than some of the heavily-pigmented colors.

The pricing at $30 per 0.5kg spool is moderate for the TPU category. Premium brands like SainSmart TPU 95A run $35-$40 per 0.5kg with marginally better consistency; budget alternatives are rare in the TPU market because the manufacturing is more involved than rigid filaments.

For phone cases, gaskets, vibration dampers, flexible mounts, prototype seals, and any application where rigid materials would be wrong, eSun TPU 95A is a reasonable choice for hobbyist printing. The print difficulty curve is real but learnable, and the resulting parts cover a category of mechanical applications that rigid materials simply can't address. For users new to flexible printing, expect to invest 5-10 hours of learning before achieving consistent results.