Eye Cu Smile V1 Prototype Transparent Face Covering Kit / Clear Mask. NanoHack Copper3D Filter by FullPlasticScientist

Last crawled date: 3 years, 3 months ago

See below solid line for original listing and instructions.
Update: 16/09/2020
--OBSOLETED--
See listing for Eye Cu Smile V2 design with full detailed instructions. Components are backwards compatible.
https://www.thingiverse.com/thing:4598055
Update: 07/09/2020
-New Filter Body EyeCuSmile_FilterBodyV1_1.stl, first layer optimisations, geometry correction.
Added concentric rings to first two 0.2 mm layers under the hexagonal mesh. Means continuous lines and less retractions on small features on first layer. Acts as a raft for the hexagonal mesh which should be consistent within three layers or so. Less risk of failed prints.
Corrected position of the groove the washer pushes into. Was very slightly off centre on the model. Didn't affect functionality on previous model.
Slightly larger chamfer on the outer edge the zip lock plastic will roll over. To strain the zip lock plastic less and make a better break edge.
Update: 06/09/2020
-Trialled Cheap waterproof button batter LED light from amazon. See latest pictures with new Eye Cu Smile remix specific ribs design mentioned in last update and the LED illuminating the mouth. https://www.amazon.co.uk/COSORO-Submersible-Waterproof-Environmental-Decoration/dp/B0755WT39B
-Works well pinned under the bottom of the ribs as shown in latest pictures.
-Requires a light diffusing membrane so no glare on the inside of the face covering. A paper napkin works well and can be pinned at its ends by the ribs.
-Makes v easy to see lips moving in low light. But also helps overcome glare from natural light as the inside of the face covering is brighter when used indoors. Will have to trial for a couple of days and in direct sunlight.
-If you try this ensure the seal and battery housing are tight, they should have an o ring to clamp, do not use if not. cannot risk battery chemicals potentially leaking into the sealed air volume. They are cheap and disposable so will be changing them regularly and sealing them shut with superglue for extra caution.
Update: 05/09/2020
quick update on design developments and feedback more to follow at a future date.
-New Ribs STL files uploaded. Increases view area. Triangular at the top now so can see the edges of the mouth clearly from more angles. Use EyeCuSmile_Ribs_V1_1 instead of the one in the flat pack face covering kit. 1x, 3x and 10x stack files as per the flat pack face covering kit printing instructions pdf. Pictures on listing will be updated shortly.
-Spontex Super Absorbent Antibacterial Sponge Cloth works best in the bottom to keep humidity under control. Replace and throw away every 2-4 hours, I take multiples with me on a long day out. Cut as large as possible to fill the bottom of the face covering. Images to follow on next update.
-Application of washing up liquid to the inside needs to be done at the same regularity as the sponge. Otherwise after 4 hours usage on a hot day it can start to steam up.
-You will need to project your voice when talking to compensate for the sealed air volume muffling speech a little. However I can still talk easily in it and people understand me fine, I just have to remember to project my voice and not mumble to compensate.
-To make the lips more visible for the hard of hearing I will be trialling White Submersible Waterproof LED button battery micro lights. One either side of the chin to illuminate the mouth more. Should make the mouth much easier to see. Will post pictures if its a success. If you try this it is important it is waterproof so no battery contaminants can enter the sealed volume. Always be careful with regards to batteries and safety. https://www.amazon.co.uk/gp/product/B0755WT39B/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&psc=1
-Glare and distortion on faceshields and other windowed masks make it too difficult for some lip readers I think. Seems it is a very exact talent that needs absolute detail to show through which makes sense. I have no experience with it. Need more feedback. Glare on this design comes from ruffles in the plastic zip lock bag. If the ribs can be tensioned outwards the plastic is pulled taught. Significantly reducing glare and making a flat window for no distortion. Thinking of using Traxxas RC car components in m3 thread between the inner holes of the ribs.
-I recommend always disinfecting the whole face covering before and after every use, eg with alcohol. But weather strip silicone D foam padding and the zip lock of the plastic should be replaced regularly. I do this every few days of use. If used in a safety critical professional setting, I would replace the zip lock plastic and padding daily. Otherwise humidity that can gather in parts of the mask will make an environment for bacterial growth in the plastic layers or on the foam weather strip. This design is essentially disposable and can be refreshed as needed. When replacing the zip lock bag take the time to submerge the frame components in alcohol or surgical spirit to guarantee no build up of bacteria over time.
-The filtermesh is capturing vapour evidenced by it being damp after prolonged use, Not sure if this will cause the filter material to get wet as it is held away from the mesh by the spacer. No evidence on trial runs and with users yet but if filter media gets wet it stops being effective so need to exercise caution. Should only be an issue if using thicker alternative filter material without the spacer ring that would contact the bottom of the mesh. If this is an issue for you in your use case then remove the mesh and simply scale the spacer ring in the Z direction in your slicer to compensate for the lost height of the mesh. That way the edge of the filter media can be clamped without a mesh present using a taller spacer ring.
-Have gained access to a k40 laser. Should be possible to laser cut fully transparent plastic for faster frame manufacture and maximum clarity. Eventually switching to producing the filter assembly in clear resin on an Elegoo mars printer. This should make for a 100% transparent prototype for fast manufacture. This will take some time and may not be successful.
This design is a Remix of the Flat pack face covering kit. https://www.thingiverse.com/thing:4574175
I call it the 'Eye Cu Smile' face covering prototype.
Named because it was designed to bring smiles back into our daily lives. Especially for the vulnerable and disabled children confused and perturbed by this strange new world we find ourselves in.
It has self-disinfecting Copper3D PLACTIVE filter mesh cartridge, hence the Cu.
Simply print a one off of the face covering kit in your size in pet g. Doesn’t have to be transparent. Then get a big Zip lock bag to use as the material and follow the assembly instructions in the attached PDF. Then use 2x the filter in this remix listing.
See attached pdf for detailed printing instructions. Different settings are required for the Filter Mesh.
A simple concept. I saw screw in filters for paper masks such as the excellent mask filter v3 https://www.thingiverse.com/thing:4323661. I have friends and family with children with disabilities, that and I was starting to feel really anxious in public. I figured out its because I can't read peoples expression. I'm so used to smiling at strangers and getting a response back. But now we live in a world of confused and suspicious eyes. I stumbled upon the Hens nest V3 from the university of Delaware. Used a zip lock bag I used to pack PPE in, big n tough, the hens nest v2 and the mask filter v3 to make a successful prototype transparent face covering in PLA. It cracked and broke shortly afterwards but proved the concept.
Hence why I developed the flat pack face covering system. So I could make 50 face covering kits with hydroknit shop towels a week, but also make a couple of transparent variants a week for those most in need. Its why the ribs are shaped as a cross, to form a window to the face for this remix.
I've been testing it at work and in public for a few weeks now. The response I get when people see me smile is almost always overwhelmingly positive. Even if most people are baffled by the bag on my face. I still consider this a work in progress prototype but have run out of time to develop it further. Hence why I'm posting it as is for the community to improve upon.
This listing is just for the filter housing and assembly instructions.
If you wear this face covering it is compulsory to smile in public :) Let's bring small moments of personal connection and happiness back to people's lives.
-Zip lock bag size required-
For Regular frame size:
Minimum size zip lock bag: (11" x 16" - 279mm x 406mm)
Suggested size bag used in pictures: (15" x 20" - 381mm x 508mm)
Assembly is much easier if you have lots of excess material to work with as with the suggested size.
Other flexible plastics can be used but heavy duty zip lock bags tend to be tough and cheap with a double wall.
-Opportunities for improvement-
Several opportunities for design improvement have been identified after feedback and are at the end of the assembly instructions. I'm out of time and am asking the community to help with these if they can.
-Safety Notices-
Due to the smaller filter area of this design it is advised that people with breathing difficulties do not attempt to use this face covering. I would also not advise giving them to children.
If at any time it feels like your breathing is being restricted and you cant get enough breath then take off the face covering immediately and check that there is nothing blocking the filters. If the problem persists select a face covering with a larger surface area such as hydroknit towel on the standard flat pack face covering kit.
It is not advisable to use n95 filters in this housing as they will be too restrictive, they are designed for use with surgical mask cut out discs, hydroknit shop towel cut out discs (4 ply) or cotton make up pads. For n95 or HEPA level filtration the filter will need to be redesigned for a larger surface area.
Humidity will build inside the sealed plastic air volume over time as it cannot escape through the filters. This would be solved by adding a vent but that defeats the point of wearing a face covering that protects others and doesn’t meet with UK advice for shops anymore.
Guidance on how to prevent the face covering misting up and to address the humidity are in the assembly instructions. After more than a couple of hours of use it is likely the face covering will need to be removed to let the humidity out or it could start to make breathing uncomfortable due to the high humidity within it. This is the case for all N95 masks without a vent. This could be particularly uncomfortable for people with lung conditions such as asthma.
-License and selling of face covering kits-
We share these files under non-commercial license. It would be great if you donated these face covering kits to those in need for free. If you need to cover your production costs, we are ok with you selling the face covering kits for production cost. However, we do not want to see these kits on eBay or amazon for extortionate costs. The design is open to the community for modification and improvement. You do not need to accredit me with the design. I just want to get it out there for others to use and improve upon.
-Legal-
Use
Recipients of the flat pack face covering kits are responsible for using their own judgement before deciding to order, receive, distribute and use these flat pack face covering kits in any setting. This flat pack face covering kit can play a part in reducing risk to users, but they are responsible for following established government and their institutional guidance as to how to protect themselves from COVID-19. These flat pack face covering kits are disposable single use only. Discard after use. Do not reuse or re-sterilise. It is expected that these flat pack face covering kits will be used as a last resort in conjunction with eye protection in accordance with the relevant guidelines. Flat pack face covering kits are not a replacement for or negate the need for users to stringently follow the recommended hygiene practices or other relevant guidelines. Recipients of these flat pack face covering kits are required to provide a copy of this disclaimer to any third party before distributing them further.
Production & Certification
These flat pack face covering kits are made to a common design but are made from various brands of PET-G plastic and on multiple types of 3D printer. This type of frame based face covering kits are widely used in large numbers around the world to combat the coronavirus pandemic. However, the face covering design supplied in this pack does not have regulatory approval. Hence these flat pack face covering kits are considered for temporary emergency use only when no other PPE is available. Potential users should consult their guidelines and procedures regarding the use of non-standardized PPE before using these flat pack face covering kits. The plastic of the frames has a limited lifespan and will degrade with successive use, hence they should be viewed as temporary and disposable.
Limitation of Warranty
No representation, promise, express warranty or implied warranty concerning the suitability of these flat pack face covering kits for any medical or personal protective use including, without limitation, their effectiveness to filter, block, or protect against any pathogen and particle, including COVID - 19. The kit is provided in a good faith charitable effort to help with the COVID-19 pandemic. If you use this design, you agree to comply with any government or institutional guidelines. You also agree that the designer: (1) Disclaims any warranties related to fitness of use, non-infringement, or compliance with regulatory standards; and (2) Have no liability for any claims of any kind made by person, either as a result of use of or as related to the item.