DtM-v3.0-BS2.3 Face Shield

This model has not been assessed for community use or in a clinical setting. Further optimization may be required.

Submitted by:

Archeantus

Fri, 2020-04-10 11:20

Vertical Tabs

General Information

Model ID

3DPX-013757

Category

Labware & Devices

Device Use

Safety and Personal Protective Equipment

Keyword(s)

DtM-v3.0, remix, COVID-19, Coronavirus, PPE, face-shield, face shield, faceshield

This is a remix of DtM-v3.0. It has been modified from the DtM-v3.0 in the following ways:

A side clip system has been added to the cradle/frame to replace the pegs for an elastic strap with a 3D printed strap. This is to enable others without access to elastic straps to have a means to create an attachment mechanism for the face shield.
The 3D printed strap is made to be printed in 3 parts allowing for even the typical small 3D printer to be used to make parts for the face shields. The multiple openings allow for custom fitting of the headband to individual head sizes ranging from small to very large. This may benefit from using TPU/flexible materials for improved retention on the head.
End clips have been added to help with face shield retention during movement/accidental bumps.
A bevel has been added to the inner forehead region to improve comfort.

These modifications should have minimal effect on the efficacy of the 3D printed face shield design relative to DtM-v3.0, yet check with the medical receiving units for acceptance criteria. This model will be uploaded to NIH as a remix of the DtM-v3.0 design.

Please refer to the original DtM-v3.0 instructions for use and orginal validation.

Thank you Design that Matters Team!

How to Make

Print Units

Printer-specific Build Instructions

Specific material

PETG preferred (see 3DPX-013359)

Build time

2-5 hours/face shield depending on settings and printer limitations

Pre- and Postprocessing Instructions

This prints well with :

0.4 mm nozzle

layer height of 0.25 mm

line widths of 0.55 mm

infill of 30%

Printing temperature of 240 C with PETG

Minimal part cooling for improved part strength (Some cooling may be needed for the bridge on the back strap)

30-45 mm/sec print speed depending on your printer

Print times range from ~2 hours using a 0.6 mm nozzle; 4 hours on a Flashforge Creator, Prusa MK2S, to 5.5 hours on a Creality Ender 3 (all volumetric limit/print quality balance dependent)

Has been printed well on Taz 6, Flashforge Creator, Qiditech Xone (for the straps due to smaller build plate), Creality Ender 3, Anet E10, PrintrBot, Monoprice MakerSelect, Prusa MK2-3S 3D printers. Straps can be printed with the faceshields for a complete set or individually as needed.

Attribution

Attribution Instructions

Based on Model ID 3DPX-013359 DtM-v3.0 version.

Thank you Design that Matters Team for your ground work and for sharing so openly!