Download the drawings and models. For making the visor/shield, you'll need a 240 mm x 240 mm sheet of flexible transparent material (recommended thickness is 0.5 mm). The frame is made out of a 305 mm x 24 mm piece of flexible material (recommended thickness is 1 mm). Choose whatever you have available. You will also need a piece of elastic material approximately 200 mm long (e.g. rubber band). A pair of basic scissors and a hole punching/drilling tool are all the necessary tools.
We use transparent 0.5 mm PETG foil for the visor (approx. €0.25 per shield) and 1 mm HIPS sheets for the frame (approx. €0.05 per shield). These materials can be easily cut according to the drawings using a pair of scissors or a scalpel. For the elastic material, we use 4 mm diameter elastic cord (approx. €0.05 per shield).
After cutting out the visor and the frame, use a drill or a sharp object to make the holes. Plastic parts can be heated with a hairdryer and additionally shaped.
All you need to do now is put everything together. For fixing the visor to the frame, we use a pair of M3 screws, washers and nuts. You can also use a stapler, glue, rivets or plastic clips. Elastic band can be tied to the frame.
Clean/disinfect the mask and donate it to those who are in need.
Share your face shields with #MasksForAll on social networks!
TIP: You can check your local office or art supply store for alternative materials.
The original length of the video is 10 minutes and 12 seconds.
Whole technical documentation, given here, is made using FreeCAD. Using the native file format of this program everyone can see how we made models and can easily edit and adapt the design to personal needs. FreeCAD is an open-source parametric 3D modeler made primarily to design real-life objects of any size. The program is licensed under Lesser General Public Licence version 2 or superior (LGPL2+). Open-source software, called Blender, is used for photo-realistic images.
You can start learning FreeCAD within courses of the Aerospace Engineering Department at the Faculty of Mechanical Engineering, University of Belgrade (for more information contact us at firstname.lastname@example.org).
Whole technical and other documentation is given under the terms of Open Source Hardware Definition 1.0. Open source hardware is hardware whose design is made publicly available so that anyone can study, modify, distribute, make, and sell the design or hardware based on that design. Open source hardware gives people the freedom to control their technology while sharing knowledge and encouraging commerce through the open exchange of designs.