Banjo Hangout Logo
Banjo Hangout Logo

Premier Sponsors

513
Banjo Lovers Online


Home made face masks, block 93% of particles

Want to hide these Google ads? Join the Players Union!
Apr 5, 2020 - 6:07:45 AM
like this
5475 posts since 8/19/2012

She made some face masks based on a pattern on the internet, but I found this article and interesting.
2 layers of Harbor Freight shop towels stop 93% of particles down to 0.03 microns.
https://www.businessinsider.com/homemade-mask-using-hydro-knit-shop-towel-filters-better-2020-4?op=1

'Inserting two of these towels into an ordinary cotton mask brought filtration up to 93% of particles as small as 0.3 microns, the smallest their machine could test. Meanwhile, the cotton masks filtered 60% of particles at best in their tests, Schempf said.'

If you are going to make some face masks you might want to check this out. They are going to post the pattern they worked out on their web site but they are still experimenting with the design.  The design should be available on Tuesday according to the article.

https://suayla.com/

Be safe.

Apr 5, 2020 - 7:16:35 AM

9844 posts since 1/15/2005
Online Now

Very interesting Glen ..... now good luck finding Harbor Freight shop towels!

Apr 5, 2020 - 8:09:31 AM
likes this

Tim13

USA

3133 posts since 4/1/2008

And good luck getting a homemade cloth face mask to seal around the face to prevent unfiltered air from being inhaled via the gaps.


I laugh when I see people in public wearing a N-95 mask over a beard, or unshaven face. They have no idea that defeats an N-95 mask.


Isolation masks, and homemade cloth masks are really to protect others, and not yourself. They reduce the droplet burden after a cough or sneeze, to reduce the distance those ultra fine droplets that don't get caught by the mask, go. They provide a little benefit from big droplets, but the air gaps around the face allow the very fine droplets in.

Apr 5, 2020 - 8:15:37 AM

Owen

Canada

5528 posts since 6/5/2011
Online Now

quote:
Originally posted by Tim13

And good luck getting a homemade cloth face mask to seal around the face to prevent unfiltered air from being inhaled via the gaps. <snip>


One of the things I'm mulling over to get a good seal, is putting a filter inside one of my "retired" CPAP face masks.

Edit: re. letting the very fine droplets in:  fwiw, a week or so back, Dr. Isaac Bogoch a infectious disease specialist (?) interviewed on CBC TV said that the virus isn't floating around trying to fill up air space.    The gaps around the sides of the masks* my wife made yesterday are hard to find... but, she's a pretty good seamstress [i.e. "fittings" were part of the process].

* = 2 layers of fabric with a pocket to put a "filter" into, should one see a need.... alas no shop towel in my shop. sad

Edited by - Owen on 04/05/2020 08:29:51

Apr 5, 2020 - 8:49:47 AM

71683 posts since 5/9/2007

The felt bag on my Harbor Freight shop air cleaner is 5 microns.Others are 10 microns or more I suppose.
Is there a preferred micron number for masks?

Apr 5, 2020 - 6:04:55 PM

5182 posts since 9/21/2007
Online Now

quote:
Originally posted by Tim13

And good luck getting a homemade cloth face mask to seal around the face to prevent unfiltered air from being inhaled via the gaps.


I laugh when I see people in public wearing a N-95 mask over a beard, or unshaven face. They have no idea that defeats an N-95 mask.


Isolation masks, and homemade cloth masks are really to protect others, and not yourself. They reduce the droplet burden after a cough or sneeze, to reduce the distance those ultra fine droplets that don't get caught by the mask, go. They provide a little benefit from big droplets, but the air gaps around the face allow the very fine droplets in.


Yes!  The problem is that our American culture is too cool for such things.  If we would all wear the stupid bandana masks that would make a huge difference to protect other people because the people who have it don't know it if they are out shopping.  But we are too cool or tough or something to look stupid and wear homemade bandana masks.   So we sneeze, cough, and spit all over everything. 

The other problem is that there is a certain group of people who would hide it if they had symptoms.  Since we are morons, one might be afraid how other people might react if they were discovered to have it (and in many cases their fears might be correct).

The CDC recommended the bandana mask with a coffee filter on Friday.  I put one together and wore it to the grocery store  on Saturday (standing in line for an hour before I was let in). 

I saw perhaps 5 other people wearing one.  I did see some older people wearing dish gloves and lawn mowing dust masks (with the mandatory boomer white beard).  And one woman was wearing a bandana as an old west outlaw (which does nothing).

Apr 6, 2020 - 3:15:11 AM
like this

40bpm

USA

53 posts since 12/21/2007

As I understand it, these home-made masks reduce outbound droplets thereby offering some protection for others. They aren't intended to protect you from inbound droplets, but they might catch a few.

Since some people are asymptomatic, I have to assume I have it and don't know it. Therefore, if you see me at all, I'll have on a goofy bandana mask and gloves. I'll just nod and move away.

Wishing everyone good health.

Apr 6, 2020 - 5:17:38 AM
like this

71683 posts since 5/9/2007

It would help immeasureably if the pres and his pals would all don masks before getting in front of the camera every day.

Apr 6, 2020 - 5:44:38 AM
Players Union Member

DC5

USA

10981 posts since 6/30/2015

quote:
Originally posted by steve davis

It would help immeasureably if the pres and his pals would all don masks before getting in front of the camera every day.


Pres already said he would not be wearing a mask in public.  Then again, it would be good to see reporters doing stories out in public wearing masks too. 

Apr 6, 2020 - 6:27:43 AM

Owen

Canada

5528 posts since 6/5/2011
Online Now

quote:
Originally posted by DC5
  Then again, it would be good to see reporters doing stories out in public wearing masks too. 

...in addition to seeing a lot of other people out in public wearing masks,  IMNSHumbleO.    

Edited by - Owen on 04/06/2020 06:28:18

Apr 6, 2020 - 7:30:36 AM

Owen

Canada

5528 posts since 6/5/2011
Online Now

I notice some masks, like these https://www.pyramexsafety.com/PYRM10VC have a one-way valve to allow easy passage of exhaled air.   Is that for the protection of the wearer? ...or for the protection of others?   devil

Apr 6, 2020 - 8:22:16 AM
like this
Players Union Member

OM45GE

USA

96372 posts since 11/7/2007

They’re still researching whether or not the following is true for the Covid19 virus, but for most other viral diseases, the viral load of your initial exposure is directly proportional to the severity of symptoms. Any reduction offered by a face covering could significantly effect the outcome of the disease.

Apr 6, 2020 - 9:00:30 AM
Players Union Member

DC5

USA

10981 posts since 6/30/2015

quote:
Originally posted by Owen

I notice some masks, like these https://www.pyramexsafety.com/PYRM10VC have a one-way valve to allow easy passage of exhaled air.   Is that for the protection of the wearer? ...or for the protection of others?   devil


Those are nuisance dust masks, and the valve helps reduce moisture buildup and fogging of glasses.  Not the best for preventing the spread of disease, but better than nothing.

Apr 6, 2020 - 9:27:27 AM

Owen

Canada

5528 posts since 6/5/2011
Online Now

I did use the phrase "like these," but probably should have picked a different site: https://medimart.com/product/face-mask-3m-aura-n95-flat-fold-with-exhalation-valve/     

I extend a Canadian "Sorry."  wink     

Edited by - Owen on 04/06/2020 09:31:35

Apr 6, 2020 - 10:59:43 AM
like this

rcc56

USA

2744 posts since 2/20/2016

If everybody will just keep their butts at home for a couple of weeks except to buy groceries, and tie something around their faces while at the store, we will get through this a lot quicker and with a lot fewer casualties.

I don't like to stay at home, eat my own cooking 3 times a day, and not hang around with people, but I'm doing it.  I don't want to risk permanent respiratory disability or worse.

I've been in email contact with an old partner in crime who lives about 50 miles north of NY city. Mike isn't scared of anything.
But Mike is scared of this. If Mike is scared, I have reason to be scared too.

To quote him: "This thing is deadly."

Edited by - rcc56 on 04/06/2020 11:08:30

Apr 6, 2020 - 11:09:33 AM

5182 posts since 9/21/2007
Online Now

quote:
Originally posted by rcc56

If everybody will just keep their butts at home for a couple of weeks except to buy groceries, and tie something around their faces while at the store, we will get through this a lot quicker and with a lot fewer casualties.

I don't like to stay at home, eat my own cooking 3 times a day, and not hang around with people, but I'm doing it.  I don't want to risk permanent respiratory disability or worse.

I've been in email contact with an old partner in crime who lives about 50 miles north of NY city. Mike isn't scared of anything.
But Mike is scared of this. If Mike is scared, I have reason to be scared too.

To quote him: "This thing is deadly."


Yes.

Apr 6, 2020 - 2:20:02 PM
likes this

71683 posts since 5/9/2007

I went into WalMart around 8:30 this morning.Box of sliced cakes and withdrew $100.
The other day I put a couple of shop masks in the car and wore one inside.

Beautiful drive (100 miles) to and from Farmington.Hot coffee and cake,575 bluegrass songs on the usb and very little traffic.
Cops are out.Got the headlight warning a couple of times from truck drivers.
I gave them the brakelight "thank you" and backed off 10.

Apr 7, 2020 - 9:11:46 AM
Players Union Member

wizofos

USA

5475 posts since 8/19/2012

quote:
Originally posted by BanjoLink

Very interesting Glen ..... now good luck finding Harbor Freight shop towels!


Had to go to town for another reason so stopped by HF. Large rolls of blue shop towels and the rolls with  the dispenser all sold out, but found one small roll.  Only need a small roll if you are going to use them for face masks.  Had to stop by Tractor Supply  and they had a whole end cap of the same towels, both rolls and in the wall mount dispensers.   Probably 20-30 rolls of the Tool Box brand that HF sells and mentioned on the web site.

Part of the trip was to Costco senior time shopping time. 8am-9am Tuesday and Thursdays. It was strange how people acted, no social interaction and people keeping apart. Unusual for Midwest Nice.

Apr 7, 2020 - 10:10:58 AM

9844 posts since 1/15/2005
Online Now

Thanks Glen ..... I go to TSC all the time!

Apr 7, 2020 - 10:17:12 AM

Owen

Canada

5528 posts since 6/5/2011
Online Now

FWIW, Brian Goldman, M.D. [host of CBC radio's White Coat,Black Art] said this in an interview this a.m., while speaking specifically about the value/use of homemade masks: "...so you're not breathing in droplets from other people."    The "you" is/was a regular Joe Schmoe and the "other people" is/was other Joe Schmoes one might come across, when they're not adhering to the "stay at home" edict.   He did mention that use of such masks is not a replacement for other measures.

Apr 7, 2020 - 11:21:28 AM
like this

slammer

USA

2865 posts since 12/30/2008

I tried my new homemade mask at the store yesterday and it worked great!!!
Even kept everyone a minimum of 6 ft away. People are so considerate when they want to be !!!


 

Apr 7, 2020 - 2:22:49 PM
likes this
Players Union Member

OM45GE

USA

96372 posts since 11/7/2007

Dale, they probably didn’t give a crap about the virus when they saw your mask.

Apr 8, 2020 - 12:56:44 PM

71683 posts since 5/9/2007

I just got an email from Job Lots that they are giving away mask material.
On my way.

Apr 8, 2020 - 3:48:45 PM

71683 posts since 5/9/2007

A very nice Carousel dinner napkin measuring 42" x 42" for nothing,but I bought $2 worth of comfortable elastic.

Hangout Network Help

View All Topics  |  View Categories

0.3203125