FlexiFil™ filament is a rubber-like 3D printer filament which allows you to print flexible objects, such as rubber machine parts, soft toys, flip-flops, and other rubbery items. FlexiFil™ opens doors to a whole new field of application when it comes to desktop 3D printing. It’s up to your own imagination what you would like to create and print. FlexiFil™ is a flexible Thermoplastic Co-Polyester 3D printer filament with a Shore hardness of 45D.
FlexiFil™ is a revolutionary new rubber-like high-performance Thermoplastic Co-Polyester (TPC) filament. FlexiFil™ has unique flexural strength properties, as 3D printed objects with FlexiFil™ will have a “flexural memory”, allowing objects to return back to their original position after being bent, dent, or folded.
FlexiFil™ is not only a flexible filament. It has quite some more remarkable characteristics. FlexiFil™ is a high-performance TPC that offers a unique combination of flexibility, high temperature resistance, strength, and an excellent UV resistance and good resistance to chemicals. The combination of above features make FlexiFil™ a unique filament in its kind.
FlexiFil™ filament is a BIO-performance TPC with a substantially reduced carbon footprint compared to typical Co-Polyester 3D printer filaments, as FlexiFil™ is partially made out of renewable carbon content, such as bio-based oils.
Unique features of FlexiFil™ filament
Very flexible / Flexural memory
Good resistance to chemicals
Excellent UV resistance
Long term heat resistant
The Charpy Notched Impact Strength Test method indicates “No Break” for FlexiFil™, meaning that FlexiFil™ will not deform, or break when stressed by bending.
Product Specifications FlexiFil™ filament has a great roundness and very tight diameter tolerances. This flexible TPC 3D printer filament is spool-wrapped on a polystyrene plastic spool with 500 grams of filament.
Filament Net Weight:
0.5 Kg ± 2%
Spool Size (D x h):
200 mm x 55 mm
Spool Hub Diameter:
Carton Box Size (L x W x H):
220 mm x 220 mm x 70 mm
For more technical specifications about our FlexiFil™ 3D printer filament, please have a look at the 'SPECIFICATIONS' tab.
General Tips & Tricks for printing with FlexiFil™ It is recommended to significantly lower your printing speed (compared to printing with PLA, or ABS) when printing with FlexiFil™. The guideline for an optimal printing temperature is to print at approximately 210°C. The recommended heated bed temperature varies between ± 60˚C and ± 100˚C. Various other options (also without heated bed) are possible depending on the type and size of the object to be printed.
In order to get a good first layer adhesion it is important that your print bed is really level and clean. Depending on the printer it can also help to use a glue stick to improve the first layer adhesion. A combination of Blue Tape, like Eurocel Blue Masking Tape, and glue stick can also do wonders.
The flexibility/rubbery characteristics of FlexiFil™ can cause some friction in the printer’s bowden tube, resulting in unstable feeding process of the filament into the extruder. As a remedy one can use a tiny bit of lubricant – like WD40 – in one’s bowden tube in order make sure there won’t be any friction.
Please do keep in mind that above recommendations are only guidelines and that every desktop 3D printer requires different settings for optimal printing results.
As FlexiFil™ is a relatively new 3D printer filament we would like to receive as many feedback as possible with respect to user experience and optimal printer settings for as many desktop 3D printers as possible. We can then compile a “tips & tricks” document for a wide range of desktop 3D printers to share with our fellow 3D printing enthusiasts.
So, we would like to ask you to tweak around with your printer settings and please do share your experiences with us. We will be very grateful for your input!
Filament Net Weight:
± 0.5 Kg
± 0.1 mm
Print Temperature Guideline:
220 - 260° C
Glass Transition Temperature:
Ovalidity Tolerance (max):
Print Speed Guideline:
10 - 20 mm/s
Janet Posted on 10 March 2015 at 17:39
The material itself is really great, however printing needs some attention. My first attempts ended up in the trash bin, because it would not stick to the bed. In the end the settings for me on my UM2 that worked:
Temperature 230.º C; heated bed temperature: 67ºC; speed 10 mm/s; no(!) glue on the bed and I wiped the filament with a cloth on which I sprayed WD40, I didn't dare to spray the WD40 in my tube. Fan speed must stay low about 50% in the first half of the print than the fans can go to 100%. Print with a layer hight of 0.1 comes out really nice. The glue (Pritt) caused the print to slide off the bed.
Roberto Vdovic Posted on 23 February 2015 at 19:41
Not easy to print, but it is flexible. Print temperature on Ultimaker original is 210-220 with speed 20-30mm/s.
Fabsterdam Posted on 3 September 2014 at 17:22
This stuff is great! It really behaves and feels like rubber. We recommend using a special extruder chassis called the FlexyStuder (designed by LulzBot, buy one from them or build it yourself, it is Open Source); it solves the problem of the filament folding up between the hobbed bolt and the hot end. We were able to print at normal speed (up to 70 mm/s) because of this, rather than the recommended max speed of 10-20 mm/s. Our printer is a Prusa i3 with a Budaschnozzle 2.0c hot end (0.35mm nozzle). Printing at 200ºC, extrusion was smooth and even. We have a BuildTak sheet on the heated bed but had to use a brim and a higher temperature (110ºC) for narrow prints to prevent corner lifting. But after that it printed beautifully!
More information and photos on our blog: http://fabsterdam.com/3dprinting/flexifil-flexible-filament/