DtM-v3.1 Face Shield PPE, 3D printable headband NO LOGO

This design has undergone review in a clinical setting and has been found appropriate when fabricated with the printer type and materials specified.

Submitted by:
Tue, 2020-03-31 13:14

Vertical Tabs

QR Code for https://3dprint.nih.gov/discover/3dpx-013359

Rating

5
Average: 5 (6 votes)

Licensing

DtM-v3.0 face shield reference, Side View, as worn
DtM-v3.0 face shield reference, as worn
DtM-v3.0 face shield reference, as worn, prescription glasses
DtM-v3.0 face shield reference, as worn, N95 and prescription glasses
DtM-v3.0 face shield reference
DtM-v3.0 face shield reference, knotted coban LF
DtM-v3.1 eliminates the embedded logo, which was hard to wipe clean, infection control risk
Two DtM-v3.0 face shields fit on the bed of a Prusa i3 MK2S
Up to three DtM-v3.0 face shields fit on the bed of a Lulzbot Taz 6

Comments

Comments

Some people are running out of PLA and PETG filament and reaching for more exotic filament materials.  We don't have any information on chemical resistance of HIPS, and we don't recommend this material at this time until the team can conduct further investigation and testing.

I have made a modification to the design that I think is worth sharing. How do I do that?

Hi all,

The word on the MasksForDocs forum is that Atomic Filament is actively manufacturing and shipping like crazy -- usually delivering within 2 days -- https://atomicfilament.com/

FYI I am in no way related to Atomic Filament. I'm just trying to get PPE built.

What tests does the VA run for face shields?

 

Faceshields are used to prevent fluids from hitting the wearer’s underlying face mask or, if not wearing a face mask, the wearer's mucous membranes (mouth and nose).

 

Tests that we ran were:

  • Donning and Doffing device – 10 times without breakage.
  • Water Splash test – 20 cc of water sprayed through a syringe at the shield from a distance of 24 inches, to ensure that underlying face mask stays dry and the device stays in place during spray.
  • Wearability Test, or, for lack of a better word, “shake test”:  Shaking head “Yes” and “No” while standing and while bent over a patient without the shield falling off

 

Additional quality checks: Are the manufacturing instructions clear? Is it easy to assemble the device? Are there instructions for use?

Did you follow any standards for these tests? If so which ones were used? 

The Instructions for Use are linked under the Extras tab. These should explain exactly how to print, assemble and clean the shields. 

The testing standards were designed in coordination with FDA based on the existing standards, but modified to be able to be done in a clinical environment in rapid time. See above for descriptions. 

I was asked by one hospital to provide a spec sheet. Here is what I came up with. Use as you see fit. You can download it here: https://drive.google.com/drive/folders/12PDqUGKuI07vD8fZ8sFlBIlU6KjpX_0y?usp=sharing. The environmental specs my best guess; I'm interested in better data.

Would you be willing/able to share your Fusion 360 file (.f3d)?

For Fusion CAD files of both the US-letter and A4 models, see the PrusaPrinters archive here:

https://www.prusaprinters.org/prints/27748-dtm-v30-face-shield-ppe-for-covid-19-remix-of-prus/files

I printed this with TPU to make it more comfortable to wear. It worked well. Are there any issues with using TPU? I've thought about making an attachable band that can be printed with TPU and print the shield portion with PLA, but wanted to see if there are any concerns with using TPU before I go that far.

Any way to make it shorter/thinner profile?  Takes a while to print and would love to save some time.

Adding even a small radius/champher to the inside bottom edge of the brow band would increase the comfort.  The weight of the visor and the shield cause the mask to weigh downward slightly and the crisp 90 degree corner presses into the forehead.

So long as equivalent mechanical properties is maintained, is there any reason going to a bigger layer height would not be acceptable?

This prints well in PLA. In nylon the upper visor section the filament does not fully adhere.  Its not visible at first. Bending it back exposes breaks in the filament which are unsanitary. Any ideas what settings I might change to make nylon print better? The hospital really preferred the nylon sample I sent,

I had the same problem using bridge nylon.  I had to add a brim (5mm) to ensure print bed adhesion.  I increased my flowrate to 125% to solve the upper visor filament issue.

CNC Kitchen recently posted detailed instructions for speeding up a 3d print like this:
https://www.youtube.com/watch?v=_bt1UZAnxnA&list=PLn3hevvzp5X6mxCNkNBT5N5q9Hhqw16LQ&index=6&t=0s

What material would you recommend using for polyjet printers specifically the Object 500 Connex3 and the Eden 500v? If there is no material that is recommended for the fabrication of headbands is there anything that could be produced with these printers to support local hospitals?

Your questions can be answered by reading the above-provided materials. Check with your printers product support community for information regarding printer-specific questions.

I like your idea. I've downloaded your files. Thank you for sharing! We are kicking around ideas for some type of NASA COVID-19 response, not sure what will actually happen. My contact info is brad.a.ensign@nasa.gov. I'm new at this and have never printing anything myself. Let me know if you have any questions. 

Hi,
I made a remix of your face shield with a flat surface for adding a name tag, and a  clear sheet holding strap tha's a companion product for it. The strap particularly useful when using very thin sheets such as retroprojection acetate. Both are open source with STL and FreeCAD source file
The remix:
https://3dprint.nih.gov/discover/3DPX-013585
The strap:
https://3dprint.nih.gov/discover/3DPX-013586
PETG is recommended for the strap as it's a bit more elastic than PLA that may break.

If this frame is used with clear plastic sheets that have been punched with a 3-hole punch. There are 3 small crescent shaped gaps that can allow liquid spray to get through the shield. We are printing these shields but doctors told us that the gaps could be a problem when health care workers intubate a patient.  Therefore we have raised the three pins up 4mm.  That has closed the gaps.  It does require that this design be printed with support material just in the area of the pins.  That has added about 7 minutes to our print time, but results in a much better shield.

Can you possiblly upload the STL to this remix?  I have noticed the gaps too.

Successfully print this design in PLA and ABS M30 on Stratasys F170 and have inventory available.

Hey guys, looking to ramp up production, I was thinking of going from printing this to using a pourable resin in a mold that would cure in half an hour. Has anyone done this? I've only used silicone molds for some carbon fiber composites.

I've got a question about the General Information, Bill of Materials section for the clear face shield component. In the description for Acceptable alternative materials, it states: "Do NOT laser-cut PVC". I'm wondering what the rationale for this statement is? Does this mean that clear PVC sheet can't be used for the face shield (why not?). Or does this mean there are some hazardous gases given off by the laser cutting process but PVC can be cut using a mechanical means? And is clear sheet PVC OK to use for the face shield?

Although polyvinyl chloride (PVC) can in fact be cut with laser, the thermal process produces hydrochloric acid and toxic fumes. For this reason, we advise you not to use laser for cutting PVC in order to prevent corrosion of your laser system and to ensure the safety of the machine operator.

The instructions to not laser cut PVC are good general instructions. Burning PVC (including via laser cutting) generates chlorine gas, which is both highly toxic and corrosive, ruining your lungs and your machine. Mechanical cutting of PVC should be fine.

Hi there,

I just got tentative approval to use a 600x600x600 build area CreatBot D600 Pro.  Both they and I are basically n00bs on 3D printing.

They've asked me to provide file(s) to the owner so they can cost it out, determine time a full build will take, as well as make it as simple as possible for them.  Would anybody be able to develop / publish a stacked build that'll maximize usage of that build area?

Here are the specs on that CreatBot D600 Pro:

https://www.creatbot.com/en/creatbot-d600.html#tech-Specs

Printing

Print Technology
Fused Deposition Modeling(FDM)

Build Volume
600*600*600 mm

Number of Nozzles
Double

Resolution
0.05 mm

Layer Resolution
0.05 mm

Filament Diameter
1.75 mm

Filament Compatibility
PLA, ABS, Carbon Fiber, Wood, Nylon, PC, PTEG, HIPS, PP, Flexible, TPU, PVA, etc.

Nozzle Diameter
0.4mm (0.3 0.5 0.6 0.8 1.0mm)

Print File Type
STL, OBJ, AMF, Gcode

Temperature

Ambient Operating Temperature
15 ℃~32 ℃

Max. Nozzle Temperature
420 ℃

Max. Bed Temperature
100 ℃

Max. Chamber Temperature
70 ℃ D600 Pro

Filaments Drying Temperature
45 ℃/65 ℃ D600 Pro

Mechanical

Construction
Power-Coated Steel, Aluminum Casting for Motion Components, POM

Build Plate
Borosilicate glass bed

Build Plate Leveling
Factory Leveled, Adjust Manually Automatic D600 Pro

Extruder
Directly Drive

Stepper Motors
1.8° Step Angle with 1/16 Micro-stepping

X Y Positioning Precision
5.08 μm

Z Positioning Precision
1.25 μm

Speed

Best Printing speed
45 mm/s

Max. Printing speed
120 mm/s

Electrical

Power Requirements
100-240V, 50-60Hz;220-240V, 50-60Hz D600 Pro

Screen
4.3'' Touch Screen with Multi-language

Max. Power
1 000 W~4 000 W D600 Pro

Control Chip
ATmega 2560

Storage Media
USB Disk

Connectivity
USB

Software

Software Bundle
CreatWare, Simplify 3D, Cura, Slice 3r, etc

Supported File Types
STL,OBJ,AMF

Operating Systems
Win7/8/10, MacOS

Special Function

Outage Restored
Save data when power is off

Filament Detection
Pause printing when filament run out

Automatic Shut-down
Turn off the power automatically when printing is complete

Size & Weight

Product Dimensions & Weight
915*845*1 085 mm 125 kg

Packing Size & Weight
1 000*1 030*1 360 mm 190 kg(Pallet)

I used the shield model I have been printing and made an STL file that will fill the printer above with 288 frames. You don't give much detail on what you want so I just took a swing at it. Tell me how you want to get the .stl

As a medical professional, i like this one because it protects forehead also ! But a small print should be performed downside of the shield (acetate) to keep shield round and stable

This is a great design and we have printed several using PETG on a LulzBot TAZ Pro.  Here is a short video:  https://youtu.be/qVT5fHNW4Ek

This transparency film is .005 in thick and 100% clear.  Is this okay to use for the shield?

I have .4 inch wide buttonhole elastic that seems to work fine.  Is this acceptable to use if I donate shields to a hospital? 

Can you remix the thinner visor model as a stack of 2, and a stack of 3? (physical model connections between stacks not needed) Separate stack STL files please. 

I have a .stl with 288 frames in a 600x600x600 volume. I have tried to publish it on this site, but the file here only has 8. I have uploaded the 288 version twice but it does not appear. Please contact me if you are interested. Perhaps I could put it on thingiverse.

Hello,

I am Extremely new to printing (i.e. i dont own one yet) but my wife and many memebers of our local dental community need a face shield to begin providing dental care again. This design seems ideal for use with Loops. I am looking into getting a printer ASAP and this one is available: Anycubic Mega-S

I am relatively tech savvy and am a tinkerer, but with the influx of new info for my first time diving into the world of 3D printing I wanted professional advice from you all on whether this printer can print this face shield effectively (it seems to meet th requirements, but I measure twice cut once). 

Please let me know what you think! Thank you in advance

I am extremely new to printing (as in dont own one yet) but i have a number of friends in the dental community who asked me to look into this for their protection.

2 questions:

1) Does this printer - Anycubic Mega-S  - meet the guidelines? it appears it does, but i am a measure twice cut once person!

2) The actual Shield that pops on - are these just PET material Clear pastic Sheets? Like for an overhead projector?

 

Any advice you can give me would be greatly apprecaited!

I am a dentist and use magnification loupes with a light attached. My loupes are a flip-up type so it is a bit bigger than through-the-lens kind. I am perfectly fine with them and changing it to a smaller size is not in my budget at this moment but I need to get back to work. I measured the distance the shield has to stand off the headband to clear the loupes with light and it is almost 4" (more like 3 and 3/4). Will this design allow me to wear my magnifiers? 

Thank you

I have probably printed and donated probably 40 or so of these, they are great, thanks! I kind of crudely also made modifications in meshmixer for an extended version. The extended version was for a re-opening dental office who was otherwise unable to get face shields. They need them with extra space to fit the dental loupes/light in there. If you could publish a version modified from the source file with roughly double the distance between the forehead interface and the shield, and some extra hight on the upper shield to help compensate for the extra distance, i'm sure plenty more dental offices could make use of them (and i could print the more clean file).