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Apple Faceshield

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Re: Apple Faceshield

#91

Post by systemvoltage »

mhb wrote: post #37
klohto wrote: post #5

I’m sad that even though this unique design was done and put online for anyone to print by Prusa, he is hardly mentioned now. On top of that, the design is already commercialized. EDIT: I see now that the design is different, you’re right

I was curious, so I looked at the Prusa design. The Apple design has enough additional cleverness that it's quite a stretch to call them the same. The main difference is that it doesn't require 3D printing which is obviously a deal-breaker for the quantity needed. By incorporating the clear plastic as a structural element, they eliminated a piece from the design. The bottom piece is also eliminated. Altogether more e…

I wish media would stop tooting how amazing "3D Printing" is. It is just one of the ways of manufacturing. IMO, it is a poor way to do anything besides home hobby projects (there are a few medical exceptions). It takes 12+ hours to print anything useful. Yet media loves talking about 3D printing.

For anyone who has worked in product design and manufacturing, it is one thing to be able to make a few prototypes (which is where 3D printing shines), and another challenge to make 5 million of those prototypes per week. It is monumentally difficult to produce anything in high volume.

I wish the media would talk about many other amazing manufacturing technologies - injection molding (20 seconds a part!), die cast aluminium, water jet cutting, laser cutting, metal stamping, and machining. These are equally amazing technologies that make the world tick...yet 3D printing gets disproportionately amount of attention. Mold making alone is a topic of insane complexity and engineering challenges.

Re: Apple Faceshield

#92

Post by djrogers »

lostlogin wrote: post #69
docbrown wrote: post #35

Earlier quoted context omitted.

> I was hoping everyone in the US might be able to buy one. This burst of PPE being produced in mass quantities are and were never meant to go in the hands of the general public (i.e., non healthcare workers), though. The general public does not need to be walking around with a full face shield, that’ll be a waste of materials, time and money, unfortunately.

Seeing people touching their masks continually while wearing gloves and using a phone is depressing.

Touching one's mask is infinitely better than the alternative of touching one's face, and in the case of a non-symptomatic individual wearing a mask to reduce outbound infectious particles has no bearing at all.

The whole 'masks are too hard to use' thing was a horror perpetrated by gov't officials afraid of private individuals hoarding masks.

Re: Apple Faceshield

#93

Post by Avamander »

Loughla wrote: post #47
762236 wrote: post #15

Where they describe how to sterilize it: DO NOT mix those chemicals together (e.g., bleach + rubbing alcohol = chloroform).

And while we're here, let's go ahead and get these others out for people to read: Bleach+vinegar = chlorine gas, Bleach+ammonia = chloramine, Bleach+rubbing alcohol = chloroform Just don't mix bleach with anything. And while we're at it, don't mix hydrogen peroxide and vinegar, either.

It is a bit sad that so many people miss or forget these important lessons in HS chemistry :P

Re: Apple Faceshield

#94

Post by Loughla »

jedberg wrote: post #56
Loughla wrote: post #47

Earlier quoted context omitted.

And while we're here, let's go ahead and get these others out for people to read: Bleach+vinegar = chlorine gas, Bleach+ammonia = chloramine, Bleach+rubbing alcohol = chloroform Just don't mix bleach with anything. And while we're at it, don't mix hydrogen peroxide and vinegar, either.

You need to add an extra newline at the end of each equation so it doesn't run all on one line. Like this: Bleach+vinegar = chlorine gas Bleach+ammonia = chloramine Bleach+rubbing alcohol = chloroform

I like longer sentence structures and lists of connected items in that format. It's less blocky and easier for my brain to process connected items. I put commas in now for other humans.

Re: Apple Faceshield

#95

Post by sirtimbly »

jhweoiru wrote: post #75
Loughla wrote: post #47

Earlier quoted context omitted.

And while we're here, let's go ahead and get these others out for people to read: Bleach+vinegar = chlorine gas, Bleach+ammonia = chloramine, Bleach+rubbing alcohol = chloroform Just don't mix bleach with anything. And while we're at it, don't mix hydrogen peroxide and vinegar, either.

Or to be even more generic, never mix a cleaning/disinfecting product with anything else.

There goes my childhood entertainment.

Re: Apple Faceshield

#96

Post by q3k »

pwthornton wrote: post #24
joncrane wrote: post #18

It would be great if they could make face shields that are dishwasher safe.

Is there any plastic that is actually dishwasher safe? I thought just about all of it started leaching when exposed to high temperatures.

Polycarbonate. It's used for reusable glass-like transparent plastic cups.

Re: Apple Faceshield

#97

Post by hogFeast »

Presumably this costs $500, the plastic shield is a $200 add-on with tints or upgrades (so that the product actually works) are another $200.

And when it breaks later that day you go into an Apple store and they give you some bull about the plastic warping and you have to buy another one.

Re: Apple Faceshield

#98

Post by AnotherGoodName »

mys_721tx wrote: post #82
TheSoftwareGuy wrote: post #50

Earlier quoted context omitted.

interesting, that's a new one I didn't know about. I've always heard the Bleach + Ammonia = Mustard gas, but not that one

Bleach breaks down to chlorine, which in turn reacts with ammonia to form chloramine. Mustard gas has sulfur and cannot be synthesized this way.

Chlorine based bleach is just one of the things that has the label "Bleach" in your household cleaning aisle.

https://en.wikipedia.org/wiki/Bleach#Classes_of_bleaches

Re: Apple Faceshield

#99

Post by hinkley »

762236 wrote: post #15

Where they describe how to sterilize it: DO NOT mix those chemicals together (e.g., bleach + rubbing alcohol = chloroform).

Oh boy. Haven't they been recommending a mix of bleach and rubbing alcohol for like a month?

Re: Apple Faceshield

#100

Post by arcticfox »

antipaul wrote: post #29

This is impressive, compared to what traditional health companies like Pharma are doing. The latter seem mostly to update existing products like faster tests or trying to develop vaccines. Whereas it’s the tech companies which are going a bit beyond their traditional business: Apple making face masks, Google and Apple making screening websites (other examples?) All of which could be done by traditional health compani…

A piece of plastic and headband is impressive compared to "remarkable", "game-changing" (in the words of UW biology professor) 5-13 minute isothermal RNA amplification tests?

https://twitter.com/CT_Bergstrom/status/1246567798697889792

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