TPU 95A vs TPU 85A: Which Flexible Filament Should You Print?
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Time to read 8 min
TPU 95A vs TPU 85A looks like a tiny number change, but in your hand, it feels like a completely different material. If you are used to PLA or PETG, even the “harder” TPU can feel surprisingly rubbery. Drop down to softer TPU, and suddenly the print behaves more like an elastic part than a normal plastic model.
In my experience, TPU 95A vs TPU 85A is not just a softness comparison. It changes how the filament feeds, how the part peels off the plate, how much the part stretches, and what kind of model actually makes sense. Pick the wrong hardness and you either get a part that is too stiff or a print setup that becomes way more annoying than expected.
Here’s the simple version: choose the harder TPU when you need structure, easier printing, and durability. Choose the softer TPU when you want more stretch, more grip, and a more rubber-band-like feel. The best choice depends on the job, not on which number sounds more advanced.
Article Summary
Table of Content
Article Summary What Shore Hardness Means For TPU TPU 95A vs TPU 85A For 3D Printing: Softness, Stretch, And Real Use Printing Difficulty: Why Softer TPU Needs A Cleaner Feed Path Must Have Products For Beginners Bed Adhesion: TPU Can Stick Harder Than You Expect Which TPU Hardness Should You Choose? Recommended Hardware for TPU Bambu TPU Setup Tips Before You Print Common Mistakes In TPU 95A vs TPU 85A Comparisons Closing Note Products Featured In This Blog Frequently Asked Questions Related Readings
What Shore Hardness Means For TPU
TPU hardness is usually described with Shore A numbers. A higher number means the material feels firmer, while a lower number means it feels softer and more elastic. So in a TPU 95A vs TPU 85A comparison, 95A is the firmer option and 85A is the softer option.
Most users miss this because both are still “TPU.” That label makes the materials sound similar, but the print behavior can be very different. A firmer TPU can still bend and absorb impact, while a softer TPU can stretch more dramatically and feel much closer to rubber.
In practical terms, 95A is usually easier to control, while 85A asks more from your feeding path and print setup. That does not mean 85A is bad. It just means the printer has less room for drag, moisture, and sloppy routing.
TPU 95A vs TPU 85A For 3D Printing: Softness, Stretch, And Real Use
When comparing TPU 95A vs TPU 85A, I would start with the part you are trying to make. If the part needs to hold a shape, resist wear, and stay easy to print, the firmer side makes more sense. If the part needs to flex, stretch, or feel soft in the hand, the softer side starts to win.
A firmer TPU in this range can work well for protective parts, bumpers, vibration pads, feet, covers, and flexible-but-structured components.
It still gives you more impact resistance than rigid plastics, but it does not feel like a loose rubber band. That extra structure is useful when the part needs to mount cleanly or stay dimensionally predictable.
Softer TPU, like 85A, feels more dramatic. Thin sections can stretch much more, and the final part can behave closer to an elastic strap or soft rubber piece. In my experience, that makes it fun for grips, flexible loops, soft contact parts, and parts where comfort matters more than stiffness.
The tradeoff is obvious: softer TPU can be more demanding. It may stick harder to the build plate, feed less consistently if the path is rough, and require more patience during support removal. Softness is useful, but it is not free.
Printing Difficulty: Why Softer TPU Needs A Cleaner Feed Path
If you are deciding between TPU 95A vs TPU 85A, the printer setup matters almost as much as the material choice. Softer TPU bends and compresses more easily, so any extra drag can turn into feeding instability.
Direct drive printers are usually the safer starting point for TPU because the extruder has more control over the filament.
That is especially true as the material gets softer. With 85A, I would pay close attention to spool resistance, tube bends, and any point where the filament can rub or pull unevenly.
This is where a Bambu TPU printing setup benefits from keeping the filament path simple. Call3D’s Bambu TPU Printing Solution collection focuses on common TPU pain points for Bambu Lab printers, including stringing, extruder jams, high failure rates, slow print speeds, poor bed adhesion, and inconsistent feeding:
I would not frame accessories as a miracle cure. Dry filament, clean routing, correct profiles, and model choice still matter. But if you are printing TPU often on a Bambu machine, using the right feed support, spool holder, PTFE path, or TPU buffer can make the whole process less painful.
Bed Adhesion: TPU Can Stick Harder Than You Expect
One thing I like about TPU is that it can grip the build plate very well. Sometimes too well. In a TPU 95A vs TPU 85A comparison, the softer material can feel more “grabby,” especially on thin parts with a lot of contact area.
That can be great during the print because the part stays put. But when the print is finished, removal can become the annoying part.
Thin flexible rings, strips, and soft parts can stretch while you peel them off. Do not rush the removal step if you care about the final shape.
In my experience, the safer move is to let the plate cool, flex the plate gently if your build surface allows it, and avoid digging under the part with sharp tools. TPU can be tough, but soft geometry can still deform if you pry at the wrong spot.
Also, do not assume every TPU needs the same bed setup. Brand, hardness, build plate texture, first-layer squish, and chamber conditions can all change adhesion. This is one of those areas where a small test print saves time.
Which TPU Hardness Should You Choose?
If you want the easier path, start closer to 95A.
In the TPU 95A vs TPU 85A decision, 95A is usually the more forgiving choice for users who want flexible parts without turning the whole print into a special project.
Choose 95A-style TPU for parts that need durability, shock absorption, and some bend without becoming too floppy. Think protective shells, printer feet, cable strain relief, tool grips, and functional parts that still need to hold shape.
It is flexible, but still controlled.
Choose 85A when the feel matters more than stiffness. If you want a soft loop, wearable contact surface, elastic part, or something that compresses easily under finger pressure, 85A makes more sense. Just be ready for a more sensitive printing process.
The practical answer is this: if the part has to mount, clip, or hold dimensions, lean firmer. If the part has to stretch, cushion, or feel soft, lean softer. Hardness is a design choice, not just a filament spec.
Bambu TPU Setup Tips Before You Print
For Bambu Lab users, the main TPU rule is simple: do not make the filament fight the machine.
If you are testing TPU 95A vs TPU 85A, keep the path as low-friction as possible before blaming the slicer.
Start with a smooth spool setup. A heavy or sticky spool can create drag, and drag is exactly what flexible filament hates. If you use an external spool holder, make sure the roll turns freely and the exit angle does not pull the filament sideways.
Dry the filament before printing, especially if you see popping, bubbles, stringing, or inconsistent extrusion. TPU moisture problems can look like slicer problems, and that is where people waste hours. Dry material gives you a cleaner baseline.
For softer TPU, avoid feeding through systems that add too much resistance. Call3D’s collection notes that Bambu AMS TPU setups can have feeding and speed limitations, and that TPU should not be fed directly through AMS for stable performance. For softer materials, smoother feeding accessories or buffer-style support can help, but compatibility varies by printer model, setup, and filament hardness.
Common Mistakes In TPU 95A vs TPU 85A Comparisons
The first mistake is judging hardness from the spool only. TPU on the spool can feel one way, but the printed part depends on wall thickness, infill, geometry, and print orientation. A thin 95A part can flex more than a thick 85A block.
The second mistake is using the same expectations for both materials. Softer TPU can be harder to feed and harder to remove cleanly. If 95A prints easily, that does not guarantee 85A will behave the same way on the same path.
The third mistake is ignoring model design. TPU is not just “soft PLA.” Corners, supports, thin walls, and overhangs need more thought. In my experience, parts designed for rigid plastic often need small changes before they make sense in softer TPU.
The fourth mistake is skipping small tests. If you are comparing TPU 95A vs TPU 85A, print a simple ring, strip, or sample part first. That tells you more about real flexibility than reading the hardness number alone.
Closing Note
TPU 95A vs TPU 85A comes down to how much flexibility you need and how much printing complexity you are willing to manage. 95A is the safer everyday TPU choice. 85A gives you a softer, stretchier result, but it asks for a better feed path and more patient setup.
If you are new to flexible filament, I would start firmer, learn the behavior, then move softer once your setup is stable. That way, TPU becomes a useful material instead of a random failure generator.
Eggman's Cat
Eggman's Cat is a 3D printing content creator focused on creative design, hands-on projects, and practical material testing. Their content covers flexible filament experiments, printing techniques, mechanical fidget toys, EDC designs, and interactive products for pets. By turning technical topics into visual, real-world projects, the creator offers an accessible and entertaining look at how different materials and designs perform in actual prints
What is the main difference between TPU 95A and 85A?
95A is firmer, easier to print, and offers more structure. 85A is noticeably softer, much more stretchable, and behaves closer to a soft rubber band.
Why does softer TPU require a cleaner feed path?
Softer filament like 85A bends and compresses more easily, meaning any extra drag from the spool or tube bends can turn into feeding instability, especially if you are not using a direct drive setup.
How should I safely remove soft TPU prints from the build plate?
Allow the plate to cool completely. Gently flex the plate if your surface allows it, and avoid digging underneath with sharp tools which can deform or tear the soft geometry.
