3D printed Face Mask A4 sheet

3D printed Face Mask with clear acrylic A4 sheet.
For thin sheets use: https://www.thingiverse.com/thing:4233152

EASIER TO PRINT FIXED VERSION: https://www.thingiverse.com/thing:4230817

Why so many revisions? We are still working on the design. If you have trouble finding what you are looking for check the PDF for images.

This model is still being revised and edited. Feel free to print it share your results and give us feedback.

The thickness of the A4 acrylic sheet (acetato) has not been confirmed, we are trying from 0.18mm to 0.8mm. 3D modell may be adapted for different thickness.
For thin sheets: 0.18 or 0.24mm use the last file.
Assembly: https://www.youtube.com/watch?v=vfoddSzQERM

REVISON LOG:

rev3.4. In testing phase

rev3.5 changes:

1. Increased distance to face
2. 2º inclination of the sheet
3. Stronger fixation for strap
4. Small adjustments for the upper printed strap
5. Adjusted total dimensions for smaller printers <190x190mm
6. Slot enlarged for horizontal A4 installation

rev3.5.1 changes:

1. improved slot system top strap
2. added M3 screw and nut for A4 sheet fixation

rev3.5.1b (optional change)

1. Shorter version, may be possible to fit 2 on 235x235 bed like ender 3.

rev3.5.2 changes:

1. 3.5.1 shorter version worked fine, so all will be fine from now on
2. removed M3 and nut, didnt work
3. Added lid to close the mask on the top
4. 2 new files: lid and screw
5. Improved top strap

rev 3.6 changes:

1. Changed lid design, only 1 file. No assembly needed.

rev 3.6b changes:

1. alternative fix closing lid like rev3.4 closed.

Please share your results or remixes

Printer parameters
Nozzle diameter: 0.4mm
Layer height: 0.28mm
Infill: 50%
No support
2 bot layer 4 top layers