Is this 3D model free to download?

Yes, PAPR v1 is free to download from Thingiverse. Open it in the free Thinger app, or use the "Download from Thingiverse" link to open the original listing by the creator.

Where do I download the STL file?

The download is hosted by Thingiverse. Use the "Download from Thingiverse" link on this page to open the original listing and grab the file, or save it to your print queue in the free Thinger app.

Designed by jwmelvin, published on Thingiverse. Please credit the creator when sharing your print.

Can I print this at home?

Yes. This is a printable 3D model intended for home FDM and resin printers. Check the original listing for suggested print settings.

PAPR v1

Source: Thingiverse by jwmelvin

The PAPR v1 is a free printable 3D model from Thingiverse by jwmelvin. This is a collection of fittings/housings to make a powered air-purifying respirator from a standard 3M respirator. You can download the STL file from the original listing below and print it at home.

Open in Thinger (free) Download from Thingiverse

86 saves Source: Thingiverse Updated 2026-10-08

Tags: PAPR, v1

About this model

This is a collection of fittings/housings to make a powered air-purifying respirator from a standard 3M respirator. The point is to overcome leakage from facial hair and (hopefully) to reduce fogging under a welding mask. I revised my prototype to use a centrifugal fan rather than an axial fan, and it seems to be just what I wanted now. Hm, the fan link seems broken so: It uses some anesthesia tubing that I had, so you'd have to adapt the design to whatever tubing you decide to use. Edit: added a straight feeder pipe out of the blower and a diffuser I may try for use in a confined mask without the respirator. Happy to upload F3D files if anyone wants them.

Frequently asked questions

Is this 3D model free to download?: Yes. PAPR v1 is free to download from Thingiverse. Open it in the free Thinger app, or use the "Download from Thingiverse" link above to open the original listing.
Where is the STL hosted?: The download is hosted by Thingiverse, not by Thinger. We link you directly to the original listing by jwmelvin.
Who made this model?: Designed by jwmelvin, published on Thingiverse. Please credit the creator when sharing your print online.
Can I print this at home?: Yes. This model is intended for home FDM and resin 3D printers. Check the original listing for suggested print settings like layer height and supports.