@Dxxxx Trump is not a reference!
// Is there an app you can use to mute or block this guy?
Any less effective protection is better than no protection.
Yes, even a scarf can reduce the likelihood of virus transmission.
By the time there is a vaccine against Covid-19 (not before 2021), the majority of people will have been infected (science says 70%). The goal now is that this happens in as long a time as possible. We can use the time to think about the really important things in life.
We see that there is Version 5 of the Copper 3d mask on their website, it looks better than the last ones.
Just by way of an update on our own work, our experiments on plating are making good progress, we are hoping for news late this week on testing (against virus / bacteria) of both the masks printed using the Copper 3d material and also some trials in regards copper efficiency against the virus using copper clad PCB board.
Subject to those results we intend to look at the coating methods next.
This was recently posted regarding copper from MIT tech review,
@sharpknlfe:
We already had it. The virus survives up to 4 hours on a copper surface. Several scientific studies have found this out.
@KJ3d:
What is the mask supposed to do?
What is the goal of the effort?
We had hoped that was fairly obvious - its a reasearch exercise in how best to protect against virus transmission as best as possible USING an SLA printer to produce parts used against Covid 19âŚ
So, some questions for you @Leolo:
How long does the corona virus live on a simple surface such as a melamine faced work top?
How long does it survive on cotton?
How long on other fabrics?
How long on a copper surface?
Please post links to scientific papers.
Thought for the day: âIn our experience its easy to criticise, but hard to contribute with supported argumentâ
@Sharpknife. This seems to disagree with the twitter post
Coronavirus RNA was found on surfaces aboard the Diamond Princess cruise ship up to 17 days after passengers disembarked, lasting far longer on surfaces than previous research has shown, according to new data published Monday by the Centers for Disease Control and Prevention.
The study examined the Japanese and U.S. government efforts to contain the COVID-19 outbreaks on the Carnival-owned Diamond Princess ship in Japan and the Grand Princess ship in California. Passengers and crew on both ships were quarantined on board after previous guests, who didnât have any symptoms while aboard each of the ships, tested positive for COVID-19 after landing ashore.
The RNA, the genetic material of the virus that causes COVID-19, âwas identified on a variety of surfaces in cabins of both symptomatic and asymptomatic infected passengers up to 17 days after cabins were vacated on the Diamond Princess but before disinfection procedures had been conducted,â the researchers wrote, adding that the finding doesnât necessarily mean the virus spread by surface.
The CDC said researchers couldnât âdetermine whether transmission occurred from contaminated surfaces,â and that further study of COVID-19â˛s spread through touching surfaces on cruise ships was warranted.
âCOVID-19 on cruise ships poses a risk for rapid spread of disease, causing outbreaks in a vulnerable population, and aggressive efforts are required to contain spread,â the CDC wrote, reiterating its guidance to vulnerable populations to avoid cruises during the pandemic.
Researchers from the National Institutes of Health, CDC, UCLA and Princeton University previously found that COVID-19 can last up to three days on plastic and stainless steel. That study also found that the amount of the virus left on those surfaces decreased over time. .
AND:
AND:
@ KJ3d
Here is a study of your questions (googled briefly):
Did you even read the articles you linked?
They contradict each other fundamentally. The statement from the first link that viruses on copper die within minutes is in stark contrast to the scientific studies in the second link, which speaks of 4 hours.
0. What do you want to tell us with it?
Who is the target group for the mask?
Well, if we assume that viruses can survive on bare copper for up to 4 hours, what should the coating of the mask with copper be good for?
Which filter are you considering for the mask?
How many particles should a specific particle size get caught in the filter?
How long should the filter be able to withstand the target particle load?
What happens to the high humidity in the air we breathe?
Should the mask only protect the wearer or his surroundings?
What options do you have to check whether the mask complies with the specifications?
How is the project supported financially and scientifically?
When should a sustainable concept be created?
In what time should which quantity be manufactured?
If you have well-founded answers to the basic questions, then you can be helped constructively. Everything else is a waste of resources IMO.
It would be easy to be drawn by you, however life is too short and precious. The answers to your question sit in other posts on this thread.
One final question for you - what are you doing to help in the pandemic?
It would be great to hear something really positive (in regards your own efforts) from you rather than negativity and criticism of others thoughts and effortsâŚ
Some helpful ideas and contributions would be a good start point, as the thread title says: âJoint and Open effortâ and later in the first post on this thread " Here in the UK (and we suspect globally) face masks are in desperate short supply. We are keen that the efforts to develop and supply any alternative masks benefit everyone OPENLY and are not used for individual gain or corporate kudos / profit. Hence this post."
Our own efforts have not been limited to work on face masks, but also protective visors. Some examples:
@ KJ3d:
One last answer to your last question:
I am development manager and currently I support the production of fabric masks according to the following template:
https://www.essen.de/gesundheit/coronavirus_6.de.html
We currently manufacture up to 120 pieces per day and distribute this to old people and caregivers. The approach to 3D mask manufacturing has proven ineffective early on. This knowledge and experience I like to share with you objectively if they are open to it.
Good health and good luck!
Thanks for your reply, great effort with the cloth masks, much better than just a scarf as suggested by a certain PresidentâŚ
People are desperate for masks
