Aegis 2

Face Shield for COVID-19

This is the result of my continued search for the optimal 3D printed face shield. I wanted to help provide a design that can be mass produced to help fight the ongoing COVID-19 pandemic.

The Aegis 1 had a very good reception and had been printed in huge volumes. Continuing on that foundation, this version focuses more on comfort and extended wear. It has features requested by the community and front liners.

This is the version 2 of the Aegis design. This one is built from the ground up. It still has the features of the original. The main difference is comfort with an option of 3 mounting systems, aiming to eliminate the need for elastics.

Please feel free to contact me directly via Facebook, I know many who visit Thingiverse doesn’t have or are having difficulties creating accounts. I’ll be glad to help out with printing and suggestions.

Aegis 1 available here:

https://www.thingiverse.com/thing:4238890

Instruction Manual

Please check out the instruction manual here:

Aegis Face Shield Manual

Please note that this is editable, please download a copy and edit for localizing to your language

Printing Notes

• To achieve around 45-1 hr minutes print time on very good quality I calibrated the design to be printed with these settings: 0.3 Layer Height, 0.8 Extrusion Width / Line Width (very important! 50% savings in print time), on a 0.4 Nozzle. I’ve also tweaked the extrusion multiplier for the top/bottom layers to around 130 percent, which assured good seal of the hood.
• A 1KG roll of filament should produce around 34 Face Shields.

Models Versions

• aegis-max – full length temples. can be used without elastics.

• aegis-fold – foldable temples, can print without supports. small footprint in print bed.

• aegis-flex – can use printable clip-on temples, along with a hook. so far the most flexible and comfortable option, tension can be adjusted by tilting temples.

Credits

• Face Shield Mount Design by HanochH (Aegis 1)
• Hook by LadyLibertyHK (Aegis 1 & 2)

Release Notes

April 16 2020

• Added aegis-max.stl, aegis-fold.stl, and aegis-flex.stl face shields.
• Added aegis-flex-clipon-temples.stl and aegis-flex-hook.stl for the aegis-flex.stl

Thing Files Guide

• aegis-max – full length temples. can be used without elastics.
• aegis-fold – foldable temples, can print without supports. can fit more in printbed.
• aegis-flex – can use printable clip-on temples, along with a hook. so far the most flexible and comfortable option, tension can be adjusted by tilting temples.
• aegis-flex-clipon-temples – temples that can be clipped on used with a hook or elastics.
• aegis-flex-hook – used with clipon-temples for provide tension and support.

Objectives

1. Comfortable for extended wear, our medical front liners are tired need to help them as much as we can
2. Non-reliant on using elastics, which can be scarce in some areas
3. Low cost that can be made and given to medical front liners
4. Fast printing, we need to be able to product a lot in a short amount of time
5. Printable on a small 3D printer bed, need to leverage all available printers out there
6. Easy to assemble and no post processing needed, time is valuable the faster we make the more lives potentially saved

Materials for construction:

• 1 pc Acetate Sheet (A4) or any plastic that is rigid (100 – 300 microns tested)
• 1 3D Printed Face Shield Frame

Printing Tips

This can easily be printed, but since it uses interlocking parts and thin level layers I suggest printing on PLA for flexibility and avoid warping.

I’ve also tested the designs in ABS, and found them more durable.

Just address the bed adhession, and it should come out good.

With my settings I can complete this in around 45 mins -1 hour on a .4 nozzle. Each printer and slicer are different, you need to tweak to get your target print time.

Please perform some calibration before print, I can share my settings using Simplify 3D on a FFCP. And CR10-V2 using Cura.

Other Important Settings using Simplify3D/Cura or other slicers:

Layers

• 0.30 – Layer Height
• 3 – Top Solid Layer
• 2 – Bottom Solid Layer
• 1 – Outline / Perimeter Shells

Speed

• 70 mm/s – Default Printing Speed
• 80 mm/s – X/Y Axis Movement Speed
• 60% – Outline Underspeed
• 80% – Infill Underspeed

Extruder

• 0.40 mm – Nozzle Diameter
• 1.30 – Extrusion Multiplier (Simplify3D)
• 130% Top/Bottom Extrusion Multiplier (Cura)
• 0.80 – Extrusion Width – IMPORTANT!!! Makes printing 2x faster than 0.40!

P.S.

Fight hard against COVID-19!

Regards from the Philippines.