Speaking of COVID-19  

RE: Speaking of COVID-19

Cool! I'd print it out if I had received my Mini already. My town here in Lombardy has been sealed off and it would be handy.

RE: Speaking of COVID-19

Posted by: @matteo-cristini

Cool! I'd print it out if I had received my Mini already. My town here in Lombardy has been sealed off and it would be handy.

Actually, it was your posts yesterday that motivated me to go looking to see if anyone had already designed something. I was going to send the files directly to you today but I could not remember in which thread I saw your comments. Maybe you know somebody else with a printer? It looks like a pretty well-designed system of a few parts.

Best to you and yours! Something tells me we're all gonna be locked-down to one extent or another in the next couple of months.

Take care!

RE: Speaking of COVID-19

Looking at the breathing mask design (the article mentioned 3 different sizes, I can only find one in their linked files...), I think flex might be good for part of it. Probably want the part where the filter cover snaps on to be rigid, but I've had excellent success printing PETG directly onto NinjaFlex and having the two bond together (my printing profiles have basically the same print temperature for PETG and NinjaFlex). For this breathing mask I would probably print all but the last layer or two of the filter cover in PETG and then switch filament to flex for the rest. That would allow the mask to fit to the user's face better. (Though supports might be a bitch...)

I'm not sure what to make of the goggles... Not sure how it is supposed to be put together. (Is the thin goggle shaped piece to use to help attach whatever is used for the lenses, or it is a face gasket to be printed from flex? (I've never been successful getting supports to separate from flex, so not sure how to print that...)

RE: Speaking of COVID-19

@sembazuru

Interesting. I started printing three of the "mask" parts last night in NinjaFlex Cheetah but they failed because I didn't see the overhang(s). Doh.

Am printing the "insert" in Carmin Red Prusament PETG now. Will try the masks in black Cheetah again when done. I've had good luck with each when I avoid being dumb.

RE: Speaking of COVID-19

Posted by: @sembazuru

I'm not sure what to make of the goggles... Not sure how it is supposed to be put together. (Is the thin goggle shaped piece to use to help attach whatever is used for the lenses, or it is a face gasket to be printed from flex? (I've never been successful getting supports to separate from flex, so not sure how to print that...)

I haven't even really looked at those yet but I also saw what you saw. Also not sure. Maybe supposed to fashion some sheets of polished Mica? 😉

RE: Speaking of COVID-19

Posted by: @armedleftist

@sembazuru

Interesting. I started printing three of the "mask" parts last night in NinjaFlex Cheetah but they failed because I didn't see the overhang(s). Doh.

Am printing the "insert" in Carmin Red Prusament PETG now. Will try the masks in black Cheetah again when done. I've had good luck with each when I avoid being dumb.

Thinking about it, the mask bit might work printing in PETG up past where supports are needed and then switch to flex. The walls at that point are thin so I'm not sure if there will be enough surface contact between the two plastics, but that would be a first order attempt.

RE: Speaking of COVID-19

@armedleftist

My buddy has a MK3S but he lives quite far. Thankfully the situation seems a little better than what it looked like at first and maybe it will get resolved this week.

I appreciate you thinking of me, thank you a lot 🙂

RE: Speaking of COVID-19

Where are you going to get N95 or N100 filter material?  Pieces of random cloth will not be very helpful to keep viruses out.

RE: Speaking of COVID-19

@matteo-cristini

I don't think there will be anything resolved in couple weeks. It's going on already for two month and right now it looks like pandemic is coming. Means it hit already Europe and it's just a matter of time 'till it hits America as-well.

@tim-m30

That was my thought as-well. If you have this material (doesn't matter in which size and shape) you can pull it over you face. Something 3D printed might fit best but at the end you can do same thing with basic tools.

RE: Speaking of COVID-19

The issue with this strain of SARS is that it has an unpredictable incubation period and is contagious when the carrier is asymptomatic.  Makes tracking cases extremely difficult: some say impossible.  Unless humidity jumps to 80% worldwide, my senses tell me a pandemic is brewing.  And from what I am reading, so do the pros. 

This is the chart I am watching ... it is updated automatically, and that tip is due to reports from other countries like China have been updated but the "other" countries have not ... so there is a flat "today" ... in a few hours it will be updated and I expect the last dot to move upwards by several hundred.  These are cases outside China ...

RE: Speaking of COVID-19

I'm monitoring this one: https://www.worldometers.info/coronavirus/

Anyway, if someone have an idea which filters we can use for this mask, it would be great.

RE: Speaking of COVID-19

Seems that site is unreliable on this side of the world.  I'm using the JHU CSSE data, but an account is needed, it seems.

As for mask media, I've been looking for general paper media for making filters for years, and yet to find a supplier that will sell less than a ton at a time.  Most are specialty manufacturers that want to make the entire product, rubber bands and all.  I did find one seller of MERV8 and MERV13 filter media (useful for home air filters), again, they want you to purchase a 6' wide 1000' roll.   I've even tried reusing the paper from the high end Filtrete filters (MERV 14), and found their glue to be too good.

In the mean time, surgical N95 masks were once pretty cheap by the 100's, and one of them can be cut to fit the plastic frame.

RE: Speaking of COVID-19

Regarding cutting existing N95 masks, how many printed mask refills can one cut out of a single surgical mask? Maybe the idea is best for stretching the usage of existing stock? 2? 3? maybe even 4?

RE: Speaking of COVID-19

I watch this site

https://gisanddata.maps.arcgis.com/apps/opsdashboard/index.html#/85320e2ea5424dfaaa75ae62e5c06e61

RE: Speaking of COVID-19

Here's an interesting paper ... not sure i trust all the comments, but the conclusion the authors make is curious.

https://www.medrxiv.org/content/10.1101/2020.02.07.20021154v1

RE: Speaking of COVID-19

Speaking of COVID-19, how is it impactind 3D printing and Prusa? I guess 3D printing as a whole is fairly dependent on Chinese manufacturing, so the effect is big? For example E3D I saw E3D suspending Hemera sales. As for Prusa Reasearch, they try to source many things locally at local manufacturers, but some things cannot be obtained anywhere else than China. Motors, electronic components, etc. Some are probably stockpiled, could last until manufacturing gets back to production. Your thoughts?

(Yes I know I should be worrying about other things than 3D printing in case of pandemic and economies collapsing... In which case I will be worrying about other things than 3D printing but we are not yet at that phase.)

RE: Speaking of COVID-19

Pretty sure 3D Printing will eventually be the least of the public's worries.  That China appears to have capped the spread internally, a mildly amazing accomplishment, it is looking like some cases have already 'leaked' to other shores.  Here in the states, the simplest fact that the CDC has been using a now known to be defective test for the past month, hard to say how the US is affected.  But with Iran and Italy cases spiking, the carriers into those locales must have been pretty mundane and essentially invisible to border agents; making the likelihood of other breaches in other countries high.

RE: Speaking of COVID-19

CDC stance seems to be "don't panic, there's no pandemic. But prepare your families." That does not sound lightly.

RE: Speaking of COVID-19

Hitchhikers Guide to the Galaxy: Don't Panic!

My math, based on the current Other than China data showing infections are doubling every five days: By April 1, 100 Thousand infected; by May 1, about 1 Million infected (again, this is outside of China).  Of course, rather than an optimist or pessimist, I'm a realist.  Most of my predictions fall short (as in mostly don't come true).  And I am factoring in the fact most nations won't break into peoples homes to extricate possible infected persons to infection camps like China has done;  they'll instead let people be people and run amok spreading the virus willy-nilly like they do colds and flu.