Durable faceshield

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

Submitted by:

SDJojnst

Sun, 2020-04-05 23:30

Vertical Tabs

General Information

Model ID

3DPX-013565

Category

Labware & Devices

Device Use

Safety and Personal Protective Equipment

Keyword(s)

PPE, 3D print Face shield, face shield, COVID 19, 3D printable

Redesigned 3d printed face shield with forehead hood. New design eliminates dog ear style of lateral clear shield attachment points. Dog ear attachment points for clear shield on old design tended to crack where dog ear meets frame when repeatedly flexed, as done when repeatedly replacing clear shield or repeatedly donning and doffing. This design moves attachment point to frame and provides additional strength with double hoop that acts as spring when flexed. Headband attachment points reinforced for added strength. Designed to fit standard 3 hole punch for attachment for clear shield. Attachment pegs modified to be slightly larger than the 7.4mm standard hole punch @ 7.8mm thus ensuring snug fit and no need for glue, clips or tape. Prototype shown in photos uses 5mm thermal laminating pouches (empty run through laminator) as they are more durable than 3 hole punch page protectors and do not require tape to reinforce top edge ( reducing chance of contamination with sticky or porous surfaces). Laminating sheets remain easily available through online purchase.

Use:

Healthcare workers face critical shortages of PPE. This face shield can be used to limit exposure to contaminants and bodily fluids from droplet, aerosol, splash and splatter and has very low cost per unit.

Face shield is easily assembled of easily obtained materials, durable, easy to don and doff and easily cleaned.

Clear shield is easily replaced if worn or damaged.

Hood protects from above.

Offers better protection than standard goggles.

Construction is completed with easily obtained material:

Frame- PLA , PETG, ABS

Clear shield -5 mil. Laminating sheets or 3 hole page protectors

Headband- elastic band, coban, hair ties or non latex rubber bands.

Assembly: attach clear shield to frame , attach headband to frame.

Clear shield is standard US 3 hole punch (110mm between hole centers) this prototype uses 5 mil. Laminating sheets (run through laminator empty), standard page protectors can be used but are not as durable – attached by placing holes over pegs.

Head band can be made of multiple materials: elastic band, coban, hair ties, thin bungie cord or non-latex rubber bands.

Optional fore head padding - weather strip, tape or foam padding

Segmentation Software

CURA

3D Modeling/CAD Software

Sketch Up

How to Make

Printer Technology/Material

Material Extrusion

Polylactic Acid (PLA)

Printer Make/Model

Creality Ender 3 Pro

Print Units

Printer-specific Build Instructions

Specific material

PLA, PETG, ABS

Number of prints per build

Build time

4 Hours 19 min. Fine setting 0.15 mm layer height

Pre- and Postprocessing Instructions

Frame Production:

3 D print: PLA , 0.4mm nozzle/0.4 mm line width, and .015 layer height, 30 % infill, infill pattern - lines, wall thickness 1mm, wall count 2, top layers 4, top layer thickness 0.6, bottom layers 4, bottom layer thickness 0.6, no supports needed. 41 G per shield frame. Sliced on Cura (see photo). Prototype printed on Ender 3, Glass bed for smooth bed finish. Required Bed size approximately 220x220mm.

Post production: none neded

Attribution

Attribution Instructions

Designer: Steven Johnston OTR/L

Feel free to modify and make better in any way posible :)