Filter adapter for 3M masks
TL;DR
- A custom 3M mask adapter connects an antibacterial/anti-viral filter to a face mask.
- The adapter is 3D-printed from PLA and painted with varnish to improve tightness.
- The filter costs less than 6PLN per piece, and the mask itself was already available.
- PLA was chosen because the printer could not handle ABS, and the second filter position is blanked with a 12 mm printed insert filled with epoxy.
Generated by the language model.
Hello, this time something without microcontroller
As we have plenty of masks because "we are prepared" I decided to add my 3 cents.
I present an adapter of my own design for the 3M mask. It is used to connect an antibacterial/anti-viral filter (at least that is what the manufacturer claims).
I printed the adapter from PLA (my printer can't cope with ABS) and painted it with varnish to increase the tightness.
I put only one filter on at the moment and blanked off the space for the second one. The blank is an adapter printed to 12mm with a hole flooded with epoxy.
The cost of the filter (search under 'resuscitator filter') is less than 6PLN/piece, the mask I had so I didn't have to spend x-something.
V1:
V2:
Example of a filter label:
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Comments
I've been printing a lot of these types of adapters to nearby medics lately. See here is a bent version that supposedly improves ergonomics: https://grabcad.com/library/3m-mask-to-dar-filter-adapter-2 It's... [Read more]
Instead of PLA, you could have used PET-G. [Read more]
Cool, but not for my printer I'm afraid. "Overhang" works out poorly for her. I checked a while ago and they don't have any more. As recently as yesterday there were over 120 in stock. I d... [Read more]
@piotr_go Couldn't you install some kind of small led in this adapter that would start flashing and remind you to change the filter after e.g. 24h? The counter reset would happen automatically when the... [Read more]
I have added a v2 fit from the other side of the filter. Too much luxury, someone else would envy me and steal it. :) [Read more]
Anyone here who has played "Metro" ? :D Clear association :D [Read more]
Let's not, because if this LED started flashing (and you wouldn't have noticed, or just happened not to have the filter with you for the change) you could get a stone in your back (a lot of stones)...... [Read more]
Excellent idea. :idea: So let me, as a , "Super - Coronavirus Carrier" :cry: I will spit, huff and puff at you, via this unmodified exhaust valve. :D Alternatively, this valve should also be... [Read more]
Yes, but probably from UV radiation :) Added after 17 [minutes]: Ok, then you might need to make some kind of small, discreet button. When pressed, the led would light up green or red. The... [Read more]
@piotr_go This now reads..constructor :cry: Based on the Italian experience of using airtight facial diving masks, we have today tried to assess for the first time with us their practical suitability... [Read more]
I happen to have such a mask. 1. Removing the internal valves is not necessary, it is actually harmful. When they are removed, the glass fogs up (I checked). They are only there to prevent the exhaled... [Read more]
Maybe off topic but what's the deal with the valve? I couldn't find anything on the internet about it. I was wondering about a bonnet e.g. M3 7502 with a round P3 filter. There, the exhaust valve is not... [Read more]
@tomek_byd How much can you write !!! The point is. to filter the air exhaled too. If you are infected, you spit up these viruses with every breath. [Read more]
I just couldn't find anywhere what this was about. I understood from this statement that the other way this valve does not protect. As much as I agree that towards the environment there is no protection... [Read more]
@tomek_byd Yes, and then it is the equivalent of a normal surgical mask. [Read more]
A normal surgical mask has problems with tightness and length of use. They can only be worn for 2h although I have read that it is even shorter. In addition, they are almost unavailable and come at extremely... [Read more]
No, a surgical mask is neither airtight nor filtering. It is only there to keep you from spitting on the patient. Alternatively: These 3M's are sealed and the filtering depends on the filter used. There... [Read more]
Hello I am a paramedic . Where can I get such adapters because my colleagues and I have such masks 3m which we bought ourselves but recently the prices of filters have been so exorbitant that it is a pity... [Read more]
Look for someone with a 3D printer in your area, or state what city you are from, maybe someone will come forward. [Read more]