Please read the information about the safety of open-source PPE on this page.
Lowell Makes is 3D printing the Prusa RC2 face shield headband and bottom reinforcement: https://www.prusaprinters.org/prints/25857-prusa-protective-face-shield-rc1/files
However, due to the amount of time it takes to 3D print a headband (~2.5 hours) we are also utilizing our CNC to mill out headbands (~5 minutes). These were designed at Lowell Makes, but are based on the Prusa headband. These use the same hole pattern as the Prusa design for the face shield. Note: in our most recent design, the open area at the top of the mask (in the photo above) is filled in.
Note: These files are usable, but are a work-in-progress and will be updated to final versions soon
We have milled the headband out of Lexan (polycarbonate) and acrylic (can be brittle) (about 1/8” thick, but you should be able to use thicker material). Note you can also use a LASER cutter, but be sure that the material you are cutting is LASER safe!
We are accepting donations of polycarbonate. Please e-mail [email protected] if you are in the Lowell area and can donate materials.
For the face shield polyester film or transparency film (cellulose acetate) 5-7 thousandths of an inch thick can be used. Lowell Makes has modified the Prusa shield to fit on an 8.5 x 11 transparency film, which is available online and in some local office supply stores
We are using 1/4″ wide elastic straps from a craft supply store.
- While the 3D printed headband is quite comfortable the CNC/LASER cut headband may need some cushioning material. A ¼” Vinyl or silicone tube can be slit and placed along the part of the headband that comes into contact with the user’s head.
- For packaging to distribute a 9×12” bag works well. If many shields are going to the same location we suggest packaging all shields in one bag to reduce the number of plastic bags.
In this video, one of our members assembles a face shield and narrates the process.