TPU 1.75mm 3D Printer Filament
- While other flexible filaments can be tricky to print, producing stringy prints with poor layer adhesion, rigid.ink was developed with this in mind. We’ve created something that prints nicer, and just happens to be incredibly tough and durable.
- Smooth feeding and printing, our low friction 94A shore hardness TPU filament negates the typical headaches with printing flexibles. Plug in the settings (prints from 210°C) and enjoy our famous ‘set and forget’ reliability.
- Just how durable? Well, with a massive elongation to break of 500% and unparalleled layer adhesion you can produce practical end-use parts that won’t let you down.
- With our industry leading tight tolerances, you get super smooth and consistent layer lines, leaving a beautiful finish. And there’s no stringing thanks to our heat stable viscosity formula. With rigid.ink TPU you get 100% printing reliability.
- Any problems, on anything to do with your order or your rigid.ink prints and you can interrogate our friendly, efficient and knowledgeable technical customer support. We’re here for you. And we won’t let you down, ever.
TPU Filament 1.75mm
Please note the following colour name changes (18.07.18):
Fire Red = Flash Red
Light Blue = Bright Blue
Light Green = Lime Green
Natural = Natural ClearThe names have changed but the colours have not, so you can continue to order the same vibrant colours you have previously.
Need flexibility along with easy printability? Then you need rigid.ink TPU filament.
TPU (or thermoplastic polyurethane) is a remarkably flexible, remarkably durable 3d printing filament that’s also very easy to use.
Some flexible filaments, like TPE, can be difficult to work with. The relative softness of the material, which gives it the desired flexibility, can also mean that the average extruder will have a hard time handling it. Instead of feeding smoothly into the hot end, the flexibility of these filaments cause them to bend and knot up in the excess spaces in the print head.
rigid.ink TPU solves this problem by being slightly harder than other flexible filaments. It’s Shore Hardness rating of 94A means that the extruder mechanism has fewer problems handling rigid.ink TPU. Material bending is reduced and this means less knotting and less headaches for you.
Even though TPU is a bit more rigid than other flexible filaments, it’s very similar to those filaments when it comes to elasticity and other mechanical properties. This means that rigid.ink TPU can be used to produce a wide variety of objects that need to bend or flex during use. Typically, this includes things like belts, springs, phone cases and vibration dampening parts. rigid.ink TPU also exhibits a high degree of abrasion resistance along with a resistance to oils, greases and a variety of solvents – making it more favorable in industry applications.
Like Ninjaflex and similar TPE filaments, rigid.ink TPU is comprised of non-toxic raw materials. It also has excellent layer to layer adhesion. This results in very durable end-use prints that also exhibit a high level of quality. Users have found that rigid.ink TPU is capable of producing prints as clean and detailed as objects made from PLA or ABS. Finally, the density of Ninjaflex and rigid.ink TPU are nearly identical, with 1.20g/cm3 for NinjaFlex (and similar TPE filaments) and 1.21g/cm3 for rigid.ink TPU. Due to the nature of Flexible filament, the diameter tolerances are +/- 0.05mm compared to rigid filament at +/- 0.03mm.
Click here to compare rigid.ink filaments
We do not hold Food Safety Certificates. Some of the raw materials used to produce our filaments are food safe accordingly to European regulations, but our filament in it's final form is not officially approved. Neither is the 3D printing process and all the components of 3D printers.
Still not sure if Rigid.ink is for you? Contact us or check out our FAQs page.
Guide Settings
Printing Temperature: 210-240°C
Bed Temperature: 20-70°C
Bed Adhesion: Glue-stick, 3DLAC, Vinyl hairspray. Increase the air-gap between nozzle for the first layer and the bed. Be especially careful with FR4, PEI and BuildTak.
Print Speed: 15mm/s or below
Cooling Fans: 30-60% after 1st layer, or as needed
Retraction: Increase more for flexible materials
Good ventilation is essential and do not leave print unattended.
Information
Density: 1.21g/cc
Tensile Strength: 5,801 psi (40MPa)
Sample Weight: Approx 35g
Empty Spool + Filament Weight: Approx 250g + 1KG = Approx 1.25KG
300G Spool Size: 16cm dia, 4.2cm width, 5.2cm dia spool hole
1KG Spool size: 20cm dia, 7cm width, 5.6cm dia spool hole
Please note: settings vary printer to printer so experimenting is essential
The 6 Best Flexible 3D Printer Filament Companies - Complete Review
What is the difference between TPE and TPU Flexible Filament?
Help Center - Flexible PLA vs TPU Summary
Compare All Filaments
For specific 3D printing help, please complete our 3D Printing Help Form.
We do not hold Food Safety Certificates. Some of the raw materials used to produce our filaments are food safe accordingly to European regulations, but our filament in it's final form is not officially approved. Neither is the 3D printing process and all the components of 3D printers.
Download Datasheet
I decided to take up the challenge of printing with tpu, I managed it on my Frankenstein printer. I just needed to slow down my speed settings and it works well. A friend asked my to see if I could make a convincing Gummy bear, his reply was it didn't taste as good as it looks and asked for more in different colours. My next dilemma is what to try next with my sample pack.
I brought the "flash red" but it took a few months to actually get round to using it. At last, I have got round to trying it out. First of all, these are the settings I used. I have a Hictop i3 clone although quite heavily modified. I have swapped the original hot end for a bowden type and using an E3D lite v6 hot end.
For the Rigid ink TPU I looked on the box and it said the hot end should be from 210c and the bed should be set at 60c. If you do a lot of printing you know how your own set up works so I decided to try printing at 220c for the hot end and 60 on the bed.
I use my own bed adhesive that I developed myself, but this TPU sticks really well I have found. In fact, I tested this out on a clean piece of glass that was cleaned and wiped over with nail varnish remover then allowed to dry and the test print stuck very well and was easy to get off.
I set the speed to 30mm/s with no part cooling and I turned off retraction. This TPU prints beautifully the layers are fused together really well and the outside wall looks neat and very tidy. I love this stuff its so easy to print with the bottom layer is like glass.
I use Octoprint on this particular printer and I made a TPU profile that I use for this filament. This means I have to select it from the list and on one print I was doing I forgot to select the TPU profile and used the default PLA one instead the hot end temp was 210c bed was 50c. The retraction was on at 6mm at 40mm/s and print speed was 40mm/s. Surprisingly it hardly made a difference to the finished object I was really happy because it means there is room for error in the print.
All in all, I think Rigid Ink TPU is one of the best TPUs I have ever used. It is different because it allows for a little human error and still comes out looking great. This allows for repeatability in your printing which makes us happier makers :O)
I will definitely be buying more of this stuff as I have much more testing and some big parts to print off.
Thanks for taking the time to share this positive review and your settings.
I'm really glad you like your rigid.ink TPU and your prints are looking fantastic!
Keep up the great work and let me know if there is anything I can help with.
All the best,
Jess
I have been using this filament succesfully for several months now. However, the colours displayed on this page are not completely representative of what you will actually get.. Dark blue is actually translucent, which should have been mentioned somewhere. The light blue is in reality less saturated and more towards green. The photos of light green and black filament do match with the actual material. I have not tried the other colours. Hardness is accurate.
I can recommend this filament, but beware that you may not get the exact colour you think you've ordered.
Thank you for taking the time to leave this positive review.
I'm glad you like rigid.ink TPU and I'm sorry if you feel like the colours on the website are not representing the actual colours.
Can you please send me a photo of the Bright Blue, so I can make sure you have received the correct one?
It should be nice and vibrant blue colour, not even close to green.
Regarding the Indigo colour, it is slightly translucent only if printed in one single layer and I apologise if this is not what you were looking for.
I can always organise a replacement for you, if you are not fully satisfied, so please let me know.
All the best
Monica
I have so far had a great experience with this tpu filament after hearing some bad stories of other filaments and the perils of flexible filament printing. This filament has so far been so easy to use and can only get better from here as I hone my printer settings and my own technique.
A very pleased and repeat customer.
The filament was good, just wanted it for some tyres for a rc plane,
Set my printer up with slower settings,
Thanks Richard.
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This is a standard charge for all orders where Express Next Working Day is selected at the checkout. Orders must be placed by 2:30pm (GMT) Monday, Tuesday & Thursdays then will be dispatched for next working day delivery. Tracking details will be emailed and text to you and you will be given a 1 hour time slot on the day of delivery.
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UK Express Saturday Shipping - £12.99
This is a standard charge for all orders where Express Saturday Shipping is selected at the checkout. Orders must be placed by 2:30pm (GMT) Thursday to be dispatched for Saturday delivery. Tracking details will be emailed and text to you and you will be given a 1 hour time slot on the day of delivery.
Please note the courier may come under interlink or DPD.
International Shipping
We ship worldwide however the rates do vary depending on the order and destination. You can get an accurate delivery charge by using the shipping rates calculator at the cart page. Delivery times vary depending on destination, local postal services and customs. We do estimate 5-7 working days for most orders (dispatched Monday to Thursday).
We now offer FREE shipping on orders over €200 for the following areas:
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Please note we do not guarantee a tracked service for international delivery and various couriers may be used.
Please contact for a quote for the following countries: Afghanistan, Belarus, Congo, The Democratic Republic Of The, Lebanon, Liberia, Myanmar, Niger, Palestinian Territory, Occupied, Saint Martin, South Sudan, Sudan, Syria, Turkmenistan, Yemen, Zimbabwe, Aland Islands, Bouvet Island, British Indian Ocean Territory, Burundi, Central African Republic, Christmas Island, Cocos (Keeling) Islands, Eritrea, French Southern Territories, Heard Island And Mcdonald Islands, Holy See (Vatican City State), Iran, Islamic Republic Of, Iraq, Libyan Arab Jamahiriya, Mali, Norfolk Island, Pitcairn, Saint Helena, Saint Pierre And Miquelon, Somalia, South Georgia And The South Sandwich Islands, Svalbard And Jan Mayen, Tokelau, United States Minor Outlying Islands, Wallis And Futuna, Western Sahara
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