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 22 January 2018

Anti-pollution mask for children made available thanks to Sinterit SLS technology and Autodesk software

Living in increasingly contaminated cities, people are using protective masks more and more frequently. While there are many styles for adults, there are far fewer designed especially for children, for whom pollution is definitely more harmful. At least on a massive scale.

New technology for children’s health
Bartlomiej Gaczorek, designer in 3d technology, responded to this need by creating a mask for young children. The mask was designed from scratch and required much more ingenuity than simply rescaling ready-made masks to smaller sizes.

One of the key requirements was to create a low-weight mask. It was also important to protect the filters without increasing the volume of the mask, as children are highly mobile and have a tendency to fall. In addition, a colorful finish made the product appealing to children.

The “brifo,” a neo-futuristic dust mask for children, was created with these elements in mind. The front part resembles a bat and superheroes from fairy tales. The mask is used for respiratory protection during creative activities (painting, polishing or gluing) and for everyday wear in areas with high air pollution.

3D printing is not only a prototype but a finished product
For creating a fully functional mask was the desktop printer, Sinterit Lisa, using SLS technology. This is due to features such as the ability to print permanent, targeted elements that could be treated and painted to create a final product, not just a prototype. In addition, it has the ability to print durable components (PA12 nylon) as well as flexible ones (TPU), making it possible to print both rigid sections of the mask and an anatomically adjustable  section for the face.

A powerful tool
Designer decided to use Autodesk Netfabb which is an additive manufacturing software that streamlines the workflow to quickly get from a 3D model to successfully printed parts. It was importat not only to streamline and speed up the preparatory process, but to interference in the structure of printed solids, as well. In the end, parts can be made lighter while maintaining equal strength. Which  also accelerates the printing process itself.

Until now, these capabilities have been more widely available for FDM printers, where the design process facilitates the automatic creation of necessary support structures. Extending these capabilities to SLS is exciting.

A milestone in design
In the case of the “brifo,” Netfabb was used to properly prepare the design before printing. The software created internal lattices to slim-down the design with a complicated, organic structure. The latticing allowed for a lightweight model with no loss of functionality or durability. Creating a similar structure manually would be much more time-consuming (if not impossible), and would almost certainly lead to mistakes that would not be 3D printable.

With very complex projects, it is virtually impossible to avoid design issues and mistakes. However, the software analyzes and detects problems, can repair meshes, and can therefore shorten the printing time even further.

“My common workflow, from idea to prototype, comes through CAD design, exporting, hollowing, infilling, and nesting inside the printer’s build volume,” says Bartlomiej Gaczorek. “Until now I had to use different software for almost every operation. Repeated imports and exports are not only frustrating, but could corrupt the final output file.”

He added, “Thanks to the software, I export only once from my CAD software and do all the preparation there. And this is a true industry standard 3D printing tool with many automated scripts and a huge number of state-of-the-art machines. One of them is Sinterit Lisa, a desktop SLS printer. SLS is a technology of 3D printing with almost no restrictions in the shaping of parts, perfect for organic and complex geometries and even interlocking elements.”

Convenience and time
Thanks to the relationship between Autodesk Netfabb and Sinterit, the designer was able to select the Sinterit Lisa printer from a list within the software and he was able to see the available workspace from the very beginning of the preparation for 3D printing. Live collision detection was also a great feature in this case.

The software like that also use automatic packing to maximize use of the printing bed. The file created at the end of processing was saved in a printer-supported extension, making it possible to start printing immediately, without using additional software. This is an invaluable convenience for users who care about time.

“The most interesting thing about the Netfabb Ultimate is inside. The repairing, hollowing, and lattice infilling algorithms are simply amazing. Where other software fails, the Netfabb Ultimate does the job effortlessly. A solid piece can be hollowed and filled with crystal-like lattice structures and vents for removing unsintered powder can be added in few simple steps. This reduces the final weight and material consumption by 50 per cent as compared to a solid part. It is a good match for an SLS printer like Sinterit Lisa,” Gaczorek says.

Sinterit is also now making their products available at a very affordable price so that everyone has access to advanced 3D technologies.

About Sinterit
Sinterit is the first manufacturer of desktop selective laser sintering 3D printers, with a mission focused on providing professional, cost-effective 3D printers with SLS technology. The company, founded by ex-Google employees with experience in the industry since 2014, delivers reliable, high-precision printers to customers around the world. During its three years on the market, Sinterit LISA has printed multiple 3D products and exoskeleton is just one of many applications. In 2017, Sinterit secured an additional EUR 1.1m in funding from additive manufacturer FIT AG. For more information visit www.sinterit.com or follow @Sinterit on  Facebook and Twitter.

More information:

Magda Worytko
PR Specialist, Planet PR
[email protected]
+48 666 300 014

Iwona Skolicka
CMO, Sinterit
[email protected]