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Gladius Friends

Slovenian 3D maker community joined forces and developed 3D models of different face masks. Main initiator and idea leader of the project Gladius David Kvaternik has together with other volunteers designed different face masks which can be made with 3D printing and could help with the solution in case of the lack of protecting gear.

On this page, we share some of the most promising examples but before you start printing, please read notification below.

The protective mask is not a medical device and is not a personal protective gear. Therefore, it does not provide full protection against the infection with COVID-19 or any other disease. The protective mask is not certified and is intended only for personal unprofessional use. Manufacturer of the mask is therefore not responsible for possible flaws and any issues arising from use of the mask. When using the mask, you have to follow the provided instructions.

A mask for a friend

A mask can be printed for your personal use, for your family and/or friends. Furthermore, in a project A mask for a friend that runs on a platform Zaščitimo Slovenijo, makers (that can help with the print of 3D mask) and those in need of a mask (for their own protection or protection of their loved ones) are connected.

What do you need?

A mask can be printed for your personal use, for your family and/or friends. Furthermore, in a project A mask for a friend that runs on a platform Zaščitimo Slovenijo, makers (that can help with the print of 3D mask) and those in need of a mask (for their own protection or protection of their loved ones) are connected.

  • 3D model of a mask
  • 3D printer (model is not important)
  • PLA filament which can be used for food or medical use
  • filter
Printing recommendations

You can get the last version of a model of the 3D mask here: Thingiverse and Github.

To meet the quality criteria and standards, PLA at 0.2 layer height needs to be used.

Placing the filter

We recommend that the filter is glued to a cover of the mask. You can use any kind of glue that can withstand at least 70 °C, however you must avoid any material that could be harmful to health.

To use the glue correctly, follow the instructions of the manufacturer.

There are many available filters with different specifications. Within our initiative we are searching for solutions that can be applied in those crisis times and are scientifically supported. That is why our team chose HEPA filters which have been tested by NASA.

Neutralization - a mask is reusable

When neutralized properly, a mask is reusable. Coronavirus is heat sensitive and can be deactivated (cannot cause infection) on the heat of 56 °C for 15 minutes 1 2. Professional literature states that in the time of shortage of protective masks at the outbreak of coronavirus in China, masks were neutralized to be reused 3. They proved and succeeded with the virus deactivation with a dry sterilization (heating up in the oven) at 56 °C.

At this point, it is very important to properly handle the mask before the procedure of neutralization as we must behave and treat it as if the mask was infected (with a coronavirus).

Resources
  • 1 The Effects of Temperature and Relative Humidity on the Viability of the SARS Coronavirus: K. H. Chan , J. S. Malik Peiris, S. Y. Lam, L. L. M. Poon, K. Y. Yuen, and W. H. Seto (Department of Microbiology, The University of Hong Kong, Queen Mary Hospital, Pokfulam, Hong Kong), obtained: 24. 3. 2020
  • 2 WHO, obtained: 24. 3. 2020;
  • 3, obtained: 24. 3. 2020;
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