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Filatech FilaFlexible40 filament

Is it for me?

FilaFlexible40 is elastic, flexible and rubber-like material. On the hardness scale, 40D stands for hard rubber. Whether you need a phone cover, an action camera case or wheels for your RC car, the flexible filament is the way to go.

Hard rubber may be a popular material, however, in some situations, it can be less than ideal or even completely unsuitable. Whether you need a phone cover, an action camera case or wheels for your RC car, flexible is the way to go. The flexible filaments are called TPE (ThermoPlastic Elastomer) or TPU (ThermoPlastic Polyurethane). Compare to normal flexible filaments (TPU or TPE based filaments), FilaFlexible40 has higher resilience (more rubbery), better performance in a wide range of temperatures, easier and more stable printing, higher chemical resistance and also UV resistance.

To successfully print with a flexible filament, first, clean the nozzle of previously extruded plastic. Next, you’ll need to empty the hotend of any plastic left inside. Normal unloading will leave some filament inside and flexible filaments will have a very hard time to extrude. So either do a “cold pull”, where you preheat, insert PLA, set the temperature to 85°C, loosen the idler completely and pull the filament out rapidly. Or alternatively, if you have 1.5mm wire around, you can just preheat and push the filament out with the wire. Before you actually load the filament, loosen the extruder (idler) screws a bit. After that, you’re good to go.

Flexible filaments can bond to the bed too much, especially to smooth PEI. To prevent damage we recommend to use glue on the bed as a separator (you can use the glue stick that we ship with each printer). You can also use the Double-sided Textured PEI Powder-coated Spring Steel Sheet without the glue.

Printing Setup

Nozzle 220 °C
Heatbed 60-75 °C

Basic Attributes

Flexible and elastic

Extra steps when loading filament

Durable printed parts

Can be tricky to print

Good layer adhesion

Strong adhesion to smooth PEI


This flexible filament with hardness Shore 40D is made by Filatech.

1.75 mm filament is manufactured with precision of +/- 0.03 mm

We reserve the right to ship weights +/- 5% due to packaging variations.


7 reviews
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Hartmann Pavel3 months ago

Experience with printing FilaFlex40 on MMU3S printer.I had 85 mm diameter wheels printed from PLA on my RC car. The car was hard to move because the wheels were slipping on any surface. I wanted to print about an 8mm tire for the circumference of the wheel.Following the advice on the PRUSA blog, I tried printing with FilaFlex40 filament. Almost immediately the printer clogged. Cleaning it up took a lot of work.I used a soldering iron to heat the filament to a slurry, which I applied in a thin layer to the wheels. The result was not pretty, but it is functional.FilaFlex40 filament is a very special material. It's incredibly tough. When heated, it forms a slurry that is very adhesive. It immediately adheres firmly to the surface of the PLA print.The properties of the filament imply a printing problem. Once the filament has melted in the nozzle, the extruder cannot pull it back in. If this happens, the filament immediately sticks very firmly to the input path. In practice, this means an immediate blockage in the printer.After many attempts, I have come up with some nice prints.This is because the filament clogging occurs when the heated filament is pulled back to the feed wheel. Filament backfeed can be eliminated in PrusaSlicer by disabling retraction in the printer properties. This eliminates (almost all) backward filament movement in the cleaning line and also during the entire print run. However, clogging can occur at the end of the print when the filament returns to the MMU selector. Therefore, I added the following to the end G-codeG S5A delay of 5 seconds is sufficient to allow the molten filament to flow out of the extruder before ejecting the filament into the selector.I have a suggestion for developers: For the "Filatech FilaFlex40" filament, do a printer type test. If the printer is"Original Prusa i3 MK3S & MK3S+ MMU2S Single" insert a retraction prohibition in the start G-code and a delay to wait for the molten filament to flow out in the end G-code.Then to print from FilaFlex40 filament, all you would need to do is set the extruder wheel pressure to low, use the filament"Filatech FilaFlex40" and print.I used a smooth backing, and the print adhered very firmly to it. You have to tear it off carefully.FilaFlex40 is an amazing material!

Nickell Kat6 months ago

Annoying but if it works, its amazing

Vollmer Ken6 months ago

Super! Great quality. I had issue with my extruder, filament get stuck. I put more pre-Load on extruder drive chain. Now it is working well. Filament / Material is very good, and usefull.

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