The purpose of this face mask is to help filter out unwanted airborne pathogens. It is easy to do for anyone who has access to a 3d printer, a headband (or some kind of elastic strap), super glue, weatherstripping (can be found at local hardware stores), and an old cotton t-shirt.

Supplies

The supplies you will need for this project include:

Access to a 3D printer
Roughly one foot of weather stripping
Superglue
An elastic head band
Old cotton t-shirt (30 cm in diameter disc)

Tools necessary to complete this project include:

Drill with a 1/8" to 1/4" drill bit
Scissors
Metal file or sandpaper

Step 1: Print Out .stl Files

To begin this project you will need to use the 3D printing software you have available to begin slicing the attached files and then begin the printing process

Step 2: Prepare Printed Parts

Once all of your parts have completed printing you will need to follow these steps to begin assembly

Remove all supports using your metal file
Check tolerances on the filter disc when inserted into the secondary housing unit
Also check the tolerance on the cap and the grooves located in the main housing
If the tolerances are not accepting of each other, begin to file down to size until the disc and cap slide in and out of their clearances with ease

Step 3: Gluing the Main Housing

Take the main housing component and hold in place in the hole of the mask to the point where about 2-3 millimetres of the housing unit are protruding from the inside of the mask
Begin to apply super glue around the edge of the main housing, bonding the mask and the main housing
Let dry for at least 24 hours

Step 4: Applying Headband

Using your scissors, cut the headband in half
Use your drill to drill two holes in the spots indicated by the red dots in the picture above
Run one end of your head band through the front of one of your new holes
tie a knot in the end of the head band so that when you pull it the headband is unable to be pulled back through the hole
Repeat steps 3 and 4 with the other end of the headband and the other hole

Step 5: Applying Weather Stripping

Cut your weather stripping to about one foot in length using your scissors
Remove the plastic protecting the adhesive
Apply the weatherstripping around the outer edge of the mask making sure to press firmly to completely utilize adhesive
Adjust positioning as necessary for most comfortable fit
Cut off any excess weather stripping

Step 6: Final Assembly

Retrieve all of your components
Begin by placing your 30 cm in diameter disc of 100% cotton t-shirt into the secondary housing
Place your filter disc into the secondary housing
Place your secondary housing into the main housing
Place your cap into the main housing and slide notch into groove to achieve a proper lock
Apply face mask onto face