We are all likely to be wearing PPE like this after the lockdowns are relaxed. Widespread testing + PPE use is the only chance we have to return to something normal before a vaccine is available.
Apple Faceshield
371–380 of 663 posts
Re: Apple Faceshield
#372Anyone else getting Radiohead album art vibes?
Re: Apple Faceshield
#373Earlier quoted context omitted.
> What a tool was being used for 2 months ago isn't relevant It is very relevant. These face shields wouldn't protect anyone from airborne/aerosol pathogens or viruses. They have a very specific purpose and that isn't one of them. If you're talking about adapting construction grade shields (like used for painting, etc) for medical use -- sure. But you aren't going to use a face shield as a replacement for a face mask…
If someone is facing me and a stream of airborne particles hits a plastic shield instead of streaming out to me, it seems pretty likely that I will be protected. I'm certainly open to the idea that fluid mechanics are complicated and somehow air currents are going to do unhelpful things, but until I find someone with a paper on the topic I'd much rather be talking to someone wearing a face shield than not. Plus obvio…
> it seems pretty likely that I will be protected
And you'd be wrong. Sure, a face shield will protect you from liquid streaming out at you (partially). However, it isn't a liquid that you need to protect yourself from in this instance... it is aerosolized particles. And those travel in the air. So when you breathe in, that air can and will move around the face shield.
The sibling comment about smoke moving is exactly right. Smoke is a great example of how small particles can move and travel in the air. If you think that a face shield will protect you from something in the air, you'd be wrong.
Side note: this is how N95 masks are actually fit. (Well, not using smoke, but similar test). If you can smell the chemical used in the test, the fit is wrong.
If you really want to protect yourself from other people sneezing -- stay away from other people. That's why social distancing is still the primary, and best, recommendation.
Re: Apple Faceshield
#374I can hear Jony Ive describing it as "fashioned from a single continuous pane of clear polymer" in my ears right now...
the level of clarity matches that of the human retina
Re: Apple Faceshield
#375Earlier quoted context omitted.
The 3D model absolutely can scale.
Sure. But for an equal amount of effort, raws and manpower you could get much more out of traditional manufacturing, much quicker. The product is a very simple stamp, with very simple dies with little wasted material. Perfect for traditional production methods. It's great people with machines are contributing to the effort, and empowering/informing individuals to be able to do so as well. But it's just done simpler t…
These 3d printed ones are being delivered and used in hospitals in my area. Not sure in what quantity, but I'm sure they'd love traditional made ones too. If only it was being provided. So what you say isn't wrong in theory, but we're not dealing with an ideal situation in the first place.
Re: Apple Faceshield
#376Earlier quoted context omitted.
The 3D model absolutely can scale.
Sure. But for an equal amount of effort, raws and manpower you could get much more out of traditional manufacturing, much quicker. The product is a very simple stamp, with very simple dies with little wasted material. Perfect for traditional production methods. It's great people with machines are contributing to the effort, and empowering/informing individuals to be able to do so as well. But it's just done simpler t…
I don't understand your argument. Those 3D printers exist and can be used. Manufacturing and those printers are not exclusive options.
Re: Apple Faceshield
#377Earlier quoted context omitted.
Can you sterilize a 3D print easily? The major downside to 3D prints is all the voids and pinholes the process creates, aside from material compatibility issues with sterilizers. This design is entirely die cut, which is incredibly fast. A machine could probably stamp out 10 of these in the time it takes to print one layer in a typical FDM printer.
> Can you sterilize a 3D print easily You can – depending on the material. The problem is keeping them sterile because, as you point out, there's gaps between layers. And there's wear on the material with most sterilization processes. Which doesn't really help with the end goal. Ideally these would be quickly discarded. > A machine could probably stamp out 10 of these in the time it takes to print one layer in a typi…
Die cutter machines are expensive, but very common. Making the dies can be expensive, but it is routinely done all over the world.
I agree that Apple should share the design as well as the tooling designs. I have a friend that started mass producing masks and open-sourced the design: https://whitelabelfaceshields.com
Re: Apple Faceshield
#378Earlier quoted context omitted.
Stanford hospital, for example, throws away one N95 per patient doctor visit. They are not sterilizing and reusing. So my friend who works there is using many dozens of them per day. It seems like they could come up with material-preserving procedures like sterilization, but they're not.
Because best data to date is that sterilization procedures damage the mask in ways that render it unsafe. When someone comes up with data finding a safe way to do so, the masks won’t go in the trash. In the meantime, I’d you have the masks to spare, you -should- be using them safely. Masks are pointless if you use them in a way that will get you sick.
This is untrue. Stanford Medicine released a study around March 22.
The TLDR is 70°C heat for 30 mins. Avoid alcohol, it kills the static charge in the mask fibres.
https://m.box.com/shared_item/https%3A%2F%2Fstanfordmedicine...
Re: Apple Faceshield
#379Earlier quoted context omitted.
Because best data to date is that sterilization procedures damage the mask in ways that render it unsafe. When someone comes up with data finding a safe way to do so, the masks won’t go in the trash. In the meantime, I’d you have the masks to spare, you -should- be using them safely. Masks are pointless if you use them in a way that will get you sick.
Says something about our society, though, that doctors at Stanford can use a mask per chat "just in case", while just across the bay at Oakland Kaiser nurses are working with multiple confirmed coronavirus patients on a single mask...
It's says that some people can't resist spreading rumors and jumping to conclusions. You have no idea how long standard docs are stretching masks.
Re: Apple Faceshield
#380Damn, the animations are smooth. But wish they made a better version of the adjustment mechanism. Feel like doctors will have a hard time adjusting the bands with their gloves on. Why not spend couple more cents and build in a clicking adjustment mechanism?? But overall, good job Apple :)
It's probably for overall logistic reasons, so the masks can pack flat and be transported as efficiently as possible.