As all of us have been wearing masks lately I wondered what the group thinks is an ideal mask for DMS?
I’ve used the traditional disposable mask like what my doctor gave me when I went to an appointment. I’ve used a mask my wife made from a bandana and I’ve used a mask that my son’s friend sewed for her friends and family. I’ve also used some masks that I used previous for woodworking that have real filters in them. I’ve also used the entire face mask with powered air circulation. I have preferences dependent upon where I’m going and what level of mask I think is most appropriate.
I’m interested in what everyone thinks about mask selection. I’m thinking of buying this one for use at the space in general.
I wear one like that, but I have fitted the ports with a layer of shop towel as a way to stop it from being a 1 way mask. The ports don’t help to keep you from spreading germs to others
I find the style you have pictured to be the most comfortable I’ve tried so far.
However, it is expressly banned at DMS because it has unfiltered exhaust valves.
This is bad according to people who still think masks do anything at all past containing droplets.
I’ve been considering designing add on external filters ( simple cotton over a 3D printed frame ) for the outlets. That would at least meet the requirement, while still keeping the damp outgoing air from having to pass entirely thru the incoming filter.
Jim went to WallyWaldo by the space the other day, He talked to them & they will give us a 10% discount on the FR masks they sell. So I bought one Tuesday afternoon. If you will be doing any work in the Metal Shop, I’d recommend it. No telling how quick the regular masks would go up in flames.
The flow path having a 180 degree jink from straight in front of you makes it VERY unlikely that droplets would exit thru the ports rather than hitting the mask and sticking.
Perfect ? No. But then how good is the seal around the edges of a cloth mask ? Same exit path.
Levi’s makes some that are on Amazon. It was like $15 for a three pack of several colors (reversible to black). They tie around your head so the ears don’t get raw.
Other places might have them but I haven’t been to a store lately to check.
BS Physics 1989, MS Physics 1993. Private Pilot’s License 1986, and I’m at year 6 at the R&D lab for a major HVAC company. I’m a little better at it than most. Not an expert, by any stretch.
How about you ?
And how about those edge seals ? Especially on cloth masks.
The point is to divert the path; if you got past that line asking if you actually had experience in fluid dynamics before making claims of the mask vents, you would have noted that it’s moot when the mask doesn’t have such a bend.
except most of these masks with exhaust valves don’t have a convoluted path; they’re a straight exhaust in front of the wearer without a path of resistance. that’s the point
