3DMart's latest real-world test is here! Last time, we shared the Sinterit flexible eyeglass frames using SLS technology (Further reading: "Powdered" Super Elastic Swim Goggles Frame Appears!). So, how does FDM's TPU material perform? We couldn't resist testing it first for you. Let's take a look at its performance after completion:
The original 3D model is quite cool. We'll provide a link at the end so you can test it yourself.
This time, we used TPU with PVA. Ultimaker's official data does not recommend using these two materials together, but 3DMart is going to try this approach first. This time, we used the Ultimaker S5 for 3D printing, with very fine default parameters. The dual nozzle system can print two different materials at once, and the supports are automatically generated, so there's no need to create them yourself.
This time, a lattice-like support structure was used. The white part in the image is the PVA, which can be dissolved in water, and the black part is the main body of the eyeglass frame, TPU.
After more than a day of printing, it's finally complete! Next, it's time for a water bath to wait for the PVA to dissolve completely. Although regular cold water is sufficient, for larger objects, we use an air pump in the water tank to significantly speed up the dissolution process.
The 3D printed flexible eyeglass frame, made with TPU and dissolved PVA supports, is finally complete. Compared to supports that are removed manually, the surface is much cleaner and more aesthetically pleasing.
Industrial-grade TPU 95A (thermoplastic polyurethane) filament has properties between rubber and plastic; it is semi-flexible and chemically resistant, with strong mechanical properties. In addition, it is easier and faster to 3D print than other TPU materials.
If you need to test prototypes with flexible materials for 3D printing, TPU 95A filament offers another quick and excellent option. For more tips on 3D printing with TPU 95A, you can refer to this link.
Want to know more about 3D printing real-world tests? Keep an eye on 3DMart's official website and Facebook page, and we will continue to provide you with 3D printing news and tests. We previously shared another type of Sinterit eyeglass frame using SLS technology, which you can also compare!
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File source: https://grabcad.com/library/water-goggles-1