Covid-19 Mask (DIY Respirator) - Easy to breathe

Prints (0)


2 pieces only (plus an optional head strap for the rubber band)

3 hour (2.5hr for thin-wall version) print time (Prusa i3, PETG, 0.3mm layer, 20% infill, 3 perimeters!)

Requires some form of a gasket on the inside edge for a good seal. Window seal works great. Silicone bead does too. Model contains a small ridge for easier alignment of the seal.

0.5 to 1 mm filter thickness - designed to be used with cloth, nano fabric or other types of thin filter materials.

The filter needs to be roughly cut to size. Snap-on filter cover holds it in place and creates a reasonable seal around the perimeter.

UPDATE 9/4/2020:

Added a thin-wall version of the facepiece (still fits the same filter caps). 1.2 mm uniform thickness of the wall yields 3 3 perimeters on printer with 0.3 mm nozzle. Reduced print time (to 2 hrs), material cost and weight. Durability in PET-G seems sufficient.

UPDATE 7/4/2020:

A second option for the filter cover designed for a round (57 mm diameter) foam cosmetic pad as a filter. The pad circumference needs to be pushed into the groove to fit and create a sufficient seal.

A third option added per suggestion from Mr. Calin Caparu - An alternative facepiece without a filter cover. Fabric- or paper-based filter is wrapped around at least 1 cm and secured to the mask via rubber band, which should be tight in the corresponding groove around the air intake. Apparent pros: Single piece, no worry of losing the cover, no possibility of bad fit between the facepiece and the filter cover due to different printing margins. Apparent cons: Needs a suitable rubber band, requires a larger piece of the filter.


This is my take on the facemask. There are plenty of other models on Thingiverse and around the internet, but I usually had issues with:

  • Long print time
  • Too much bulk

and most importantly

  • Very hard to breathe with a good seal!!


The protection certainly varies depending on the filter used. The main purpose of this mask is a disposable mask replacement that is relatively convenient to wear and breathe in for a longer period of time.

Let me know if you need a modified size! I can also model in accommodation for glasses if needed. My glasses work with this mask fine.

Stay safe!

Design Files

File Size

9.03 MB
1.37 MB
9.72 MB
1.42 MB
9.32 MB
1.62 MB


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