Great to see our design is spreading and doing good across the world:) Here is the link to my original design on Thingiverse: (stay tuned for MAJOR development news and new versions in days to come, we have a big team working around the clock on new designs for a wide variety of filter designs, and other weapons against the Covid scourge!): www.thingiverse.com/thing:4222563
For ones that have been approved for medical staff and more go to getusppe.org. Make, give & donate items & materials to help those on the front lines.
In case you weren't aware, the CDC just announced that they have revised their guidelines for health care professionals on how to deal with shortages in the supply of respirators for the health care industry. Including limiting masks to those HCP with the highest need, using physical distancing whenever possible so you don't need a respirator, stop providing them to the incoming patients, reusing disposable respirators as long as possible, and yes, using bandannas and scarfs if you have nothing else. Yes, that is from the CDC. There is a shortage, there will continue to be a shortage of masks. Does this design need more work? Yes. I'm going to be experimenting with a flexible tubing seal around the edge. I've used respirators for my entire adult life and used to be a certified respirator trainer, and I would feel more comfortable training someone on the proper use of this, then to give them a bandanna and telling them "good luck". What other recommendations do folks have about IMPROVING this design. That is what would be really useful. Although it would have been nice, would still be nice, if there was a national scale up of production in this time of emergency. www.cdc.gov/coronavirus/2019-ncov/hcp/ppe-strategy/face-masks.html (the bandannas are at the bottom of the page).
1. If you haven't already, provide a captive retention system for holding the filter(s) in place rather than simply a slotted cavity (as appears to be the case from a simple glance) 2. Incorporate "live hinges" at facial molding points to improve fit by briefly thinning the plastic, preferably in sequences of 3-7 hinges per molding point to reduce strain on each bend. 3. Provide models with filter housings sized for different commonly available filters - some people may have industrial respirator cartridges already but others will need to make do with modifying HEPA and activated-carbon bags and filters intended for vacuum cleaners, home air purifiers, and home furnaces.
Hei, I’m the guy behind the original design:) we now have a core team of 10, with literally hundreds of volonteers on slack, and 300+ printers in the network. We have TONS of new stuff coming out in days to come, we’ve been working 24/7 for the last 10 days, an english website is launching tomorrow, you can also write to me on FB (David Kvaternik) with suggestions and improvements, we will also have lots of scientific papers listed,... thanks for info on the CDC, could you send me the source? It would be VERY usefull, the first prototypes of ours utilizing anestesiology filters, which hospitals already have, are going to hospital trial tomorrow.
@@Kvatthro Hi David, here is the CDC website for Health Care Providers: www.cdc.gov/coronavirus/2019-ncov/hcp/ppe-strategy/index.html if you click on the N95 respirator section that is where you'll find the information. I've got some TSU filament coming in this week and I'm going to try and see if that works better. I did rig up one of the PLA masks with 1/4 clear poly tubing to make a better fit, but it is still a little less conforming than I'd like. I've got some 3/8" tubing coming in as well to try. As soon as I rig that up I'll shoot you a picture. I made filters using a HEPA furnace filter too, those are still available at some of the big box stores and you can get a lot of filters out of each one. I'd also like to experiment with adding the screw on filter assemblies to the design. I've been using a 3M 6100 1/2 mask respirator for years and the one I have came with a removable, blank filter for the N95 inserts (think large cosmetic round wipes). But I can't find that rig anymore, I've got to see what they've replaced it with. But the rig could literally take anything that was cut to the right size and it screws onto the respirator instead of a pre-manufactured filter. Just food for thought. As soon as I've got a couple finished I'll be doing some respirator tests on them to see if they are okay, great, or still needs work.
Also talking with our local hospital, they haven't (yet) run into the need to replace respirators/masks yet, but are already changing rules on when they issue them. They did express a need for facemasks, particularly ones that could be easily made/cleaned. And of course a good strategy for cleaning. I'm thinking an alcohol bath would the the best quickest way to sterilize and wouldn't damage the PLA or TSU filament. Providing guidance to the health care community on that is probably important too. Obviously heat won't work and since the materials are more porous than pre-made materials then wipes are going to be less effective. Again, food for thought going forward.
Thomas Bickford hei, we have tons on info on this, we have hospital sterelization departments, microbiologists,... on board. Heat DOES work, since 65-70degrees C for 40 minutes is enough to neutralize Coronavirus (influding a safety margin). This temp the PLA can take! Tested.
Guys, this is not a good idea. - N95 filter material is the stuff we're facing a shortage of, so I I have no idea where they think they're going to find filters for this design. - PLA is not flexible and will not seal to your face - It's not possible to sanitize these parts. I admire the heck out of the initiative, positivity and good will these folks are showing, but I hope they can switch to producing acrylic face shield frames instead. Those are also in short demand and unlike this design is something people actually need.
Problem is that right after the general population admires efforts and ideas like this, the same general population comes with torches and pitchforks when the respirators don't work. There is a reason for the N95 rating, and I'm skeptical that this design would meet those requirements (or, less PC, this design isn't going to work). Admirable? Yes. Subject this design to NIOSH testing before casting significant praise and assuming that 3D printing has solved the problem, however.
It's perfectly possible to sanitize the parts. All it takes is an alcohol bath. IIRC the old CDC general guideline for alcohol sanitation is ten minutes of submersion.
Where are you getting your information from? True - PLA is not flexible, but malleable with hot water - which is what is emphasized when receiving the product. IT WILL NEED TO BE PROCESSED TO WORK FULLY. This would be like criticizing a treadmill for not working properly, prior to assembly. It is very possible to sanitize masks with bleach and other means. We agree there is a shortage in N95 masks, but vs criticize and spread negativity maybe help formulate a plan ? How about the idea to cut the N95 mask into quarters and using those for the filters... then we increase supply with zero additional investment. These are things we need to focus on.
@@jd9688 Okay let's say you heat up your PLA mask to 70C so it hits glass transition and you can mold it to your face. Besides the obvious problem of pressing uncomfortably hot plastic to your face, you still have to buy N95 mask material for it. How does this solve the mask shortage problem?
@@bigmclargehuge1170 very good point. I thought the same thing about pushing said plastic to my face. ruclips.net/video/wg4Sgw11bM4/видео.html. But watch the tutorial and notice how he molds and then presses to face once cooled. Takes a couple times but it works. Thermoforming has been done for a long time... That's in the instructions on how to get your mouth guard to fit perfect. Not the most comfortable, but not a safety issue IF DONE PROPERLY. Remember that's how you get your mouth guard to fit perfect, though you dropped in a pot of hot water! And THIS WILL NOT STOP THE SHORTAGE. The agenda involved is not to stop the shortage (I HOPE SOMEONE STEPS UP AND CONVERTS THEIR FACTORIES INTO A N95 PRODUCTION FACILITY). It is to help where there ARE NONE. And as per CDC guidelines "In settings where facemasks are not available, Healthcare professionals might use homemade masks (e.g., bandana, scarf) for care of patients with COVID-19 as a last resort." Ill be darned if I have the ability to help create something better than a bandana for those saving lives and just sit idly by. I appreciate your candor and willingness to ask hard questions and relieve an opposing them with an open mind.
She's not even using the correct terminalogy - the extruder isn't what heats the filament. PLA can be quite porous if printed incorrectly, TPU would probably be a better proposition. I get the feeling these folks are " winging" it and they don't entirely know what they're doing.
Look up Prusa a 3d printing company in czech republic. They have a lot of valuable info on their website about this and the safety of these types of masks etc.
Hello, I took a 3d printed respirator like this one and made a face gasket with silicon 1 caulk and soap/glycerine. People do this to make cheap molds. The idea is that you let it get to a putty state, build your gasket, put a little soapy water on your face and do a quick press for a custom mold. It created a completely air tight custom seal. If you want pics, then let me know your email and I will send them over.
Are the universities helping with this? I go to Rutgers, and I know they have 3D printers, I think it’s safe to assume that all universities are capable of making 3D printed respirators. Why are they not doing it?
i do think you idea is great but in term of mass production, please think poor people like me cause i really think you guys can come out off 3d print mask idea which cheap also the safety can be used not only for public but also medical staff
Siddharth Ghanta Do you know the model and size of the recommended filter Not specified nor mentioned in the video? She is demonstrating a solution to a low resource item. If the filter for this is a low resource item, then this is a useless solution. It appears the creator of this video does not know either. That is a very important element left out
Nice work, could you tell me the best CURA SILICER settings for PLA filament /ENDER 3 PRINTER, I want to start doing this for the comunity but I don't have time to inviestigate with CURA, please help me out
People like to down people trying to Do something. If you haven’t been a helping factor there shouldn’t be nothing to say. Thanks for helping out to these people.
It's probably more useful to print those face shield brims that are designed to use clear acetate films that are still easy to buy like overhead transparencies, production bottleneck is the n95 filters so I don't see how this helps.
all of the 3m furnace filters in the filtrete family are all made from the same material as a n95 mask... melt blown static charged polyproplyen. You can get over a 1000 filters from one small furnace filter
When we created V-Slot and the OpenBuilds Modular Building System we had no idea that machines made from it would be a part of helping to change the world on such an amazing level!
Hei, I’m the guy behind the original design:) we now have a core team of 10, with literally bindreds of volonteers on slack, and 300+ printers in the network. We have TONS of new stuff coming out in days to come, an english website is launching tomorrow at gladius.si www.thingiverse.com/thing:4222563
This is great. Few thoughts. Have your tested as FDM is not airtight... Just try placing in water and watch it soak up water like a sponge. With that you can use coatings...like XTC-3D to make air tight.
I already read this statement somewhere else too and also believe it. My "but" part is, that FDM can act enough air resistance IF there is a large hole in the middle too. I spent my weekend to think/create something similar like in the video (before I saw this) as HEPA filters for cars has a very good price/cm2 if we compare them to another product specific HEPAs. Also they are available in great numbers! I used a SCT SA1145 cabin filter which costs aproximately 5 dollars and can cover 8 pcs of filters (7x7cm). The big problem with the project above (and yet mine has the same problem) that the HEPA is just dropped inside, so the lowest air resistance is not the HEPA itself but the leakage right next to it. There should be an insulation which blocks the gap between the plastic and the zigzag. Also a big question is if the HEPA can release particles while in use. Glass filaments get into lungs can't be too healthy.
Great to see our design is spreading and doing good across the world:)
Here is the link to my original design on Thingiverse: (stay tuned for MAJOR development news and new versions in days to come, we have a big team working around the clock on new designs for a wide variety of filter designs, and other weapons against the Covid scourge!):
www.thingiverse.com/thing:4222563
Great job. Will you be sharing the file so all of us can contribute?
Our design:) www.thingiverse.com/thing:4222563
For ones that have been approved for medical staff and more go to getusppe.org. Make, give & donate items & materials to help those on the front lines.
I thought the point of the mask was to filter the air int clean air
In case you weren't aware, the CDC just announced that they have revised their guidelines for health care professionals on how to deal with shortages in the supply of respirators for the health care industry. Including limiting masks to those HCP with the highest need, using physical distancing whenever possible so you don't need a respirator, stop providing them to the incoming patients, reusing disposable respirators as long as possible, and yes, using bandannas and scarfs if you have nothing else. Yes, that is from the CDC. There is a shortage, there will continue to be a shortage of masks.
Does this design need more work? Yes. I'm going to be experimenting with a flexible tubing seal around the edge. I've used respirators for my entire adult life and used to be a certified respirator trainer, and I would feel more comfortable training someone on the proper use of this, then to give them a bandanna and telling them "good luck".
What other recommendations do folks have about IMPROVING this design. That is what would be really useful.
Although it would have been nice, would still be nice, if there was a national scale up of production in this time of emergency.
www.cdc.gov/coronavirus/2019-ncov/hcp/ppe-strategy/face-masks.html (the bandannas are at the bottom of the page).
1. If you haven't already, provide a captive retention system for holding the filter(s) in place rather than simply a slotted cavity (as appears to be the case from a simple glance)
2. Incorporate "live hinges" at facial molding points to improve fit by briefly thinning the plastic, preferably in sequences of 3-7 hinges per molding point to reduce strain on each bend.
3. Provide models with filter housings sized for different commonly available filters - some people may have industrial respirator cartridges already but others will need to make do with modifying HEPA and activated-carbon bags and filters intended for vacuum cleaners, home air purifiers, and home furnaces.
Hei, I’m the guy behind the original design:) we now have a core team of 10, with literally hundreds of volonteers on slack, and 300+ printers in the network. We have TONS of new stuff coming out in days to come, we’ve been working 24/7 for the last 10 days, an english website is launching tomorrow, you can also write to me on FB (David Kvaternik) with suggestions and improvements, we will also have lots of scientific papers listed,... thanks for info on the CDC, could you send me the source? It would be VERY usefull, the first prototypes of ours utilizing anestesiology filters, which hospitals already have, are going to hospital trial tomorrow.
@@Kvatthro Hi David, here is the CDC website for Health Care Providers: www.cdc.gov/coronavirus/2019-ncov/hcp/ppe-strategy/index.html if you click on the N95 respirator section that is where you'll find the information. I've got some TSU filament coming in this week and I'm going to try and see if that works better. I did rig up one of the PLA masks with 1/4 clear poly tubing to make a better fit, but it is still a little less conforming than I'd like. I've got some 3/8" tubing coming in as well to try. As soon as I rig that up I'll shoot you a picture. I made filters using a HEPA furnace filter too, those are still available at some of the big box stores and you can get a lot of filters out of each one. I'd also like to experiment with adding the screw on filter assemblies to the design. I've been using a 3M 6100 1/2 mask respirator for years and the one I have came with a removable, blank filter for the N95 inserts (think large cosmetic round wipes). But I can't find that rig anymore, I've got to see what they've replaced it with. But the rig could literally take anything that was cut to the right size and it screws onto the respirator instead of a pre-manufactured filter. Just food for thought. As soon as I've got a couple finished I'll be doing some respirator tests on them to see if they are okay, great, or still needs work.
Also talking with our local hospital, they haven't (yet) run into the need to replace respirators/masks yet, but are already changing rules on when they issue them. They did express a need for facemasks, particularly ones that could be easily made/cleaned. And of course a good strategy for cleaning. I'm thinking an alcohol bath would the the best quickest way to sterilize and wouldn't damage the PLA or TSU filament. Providing guidance to the health care community on that is probably important too. Obviously heat won't work and since the materials are more porous than pre-made materials then wipes are going to be less effective. Again, food for thought going forward.
Thomas Bickford hei, we have tons on info on this, we have hospital sterelization departments, microbiologists,... on board.
Heat DOES work, since 65-70degrees C for 40 minutes is enough to neutralize Coronavirus (influding a safety margin).
This temp the PLA can take! Tested.
Guys, this is not a good idea.
- N95 filter material is the stuff we're facing a shortage of, so I I have no idea where they think they're going to find filters for this design.
- PLA is not flexible and will not seal to your face
- It's not possible to sanitize these parts.
I admire the heck out of the initiative, positivity and good will these folks are showing, but I hope they can switch to producing acrylic face shield frames instead. Those are also in short demand and unlike this design is something people actually need.
Problem is that right after the general population admires efforts and ideas like this, the same general population comes with torches and pitchforks when the respirators don't work. There is a reason for the N95 rating, and I'm skeptical that this design would meet those requirements (or, less PC, this design isn't going to work).
Admirable? Yes. Subject this design to NIOSH testing before casting significant praise and assuming that 3D printing has solved the problem, however.
It's perfectly possible to sanitize the parts. All it takes is an alcohol bath. IIRC the old CDC general guideline for alcohol sanitation is ten minutes of submersion.
Where are you getting your information from? True - PLA is not flexible, but malleable with hot water - which is what is emphasized when receiving the product. IT WILL NEED TO BE PROCESSED TO WORK FULLY. This would be like criticizing a treadmill for not working properly, prior to assembly. It is very possible to sanitize masks with bleach and other means. We agree there is a shortage in N95 masks, but vs criticize and spread negativity maybe help formulate a plan ? How about the idea to cut the N95 mask into quarters and using those for the filters... then we increase supply with zero additional investment. These are things we need to focus on.
@@jd9688 Okay let's say you heat up your PLA mask to 70C so it hits glass transition and you can mold it to your face. Besides the obvious problem of pressing uncomfortably hot plastic to your face, you still have to buy N95 mask material for it. How does this solve the mask shortage problem?
@@bigmclargehuge1170 very good point. I thought the same thing about pushing said plastic to my face. ruclips.net/video/wg4Sgw11bM4/видео.html. But watch the tutorial and notice how he molds and then presses to face once cooled. Takes a couple times but it works. Thermoforming has been done for a long time... That's in the instructions on how to get your mouth guard to fit perfect. Not the most comfortable, but not a safety issue IF DONE PROPERLY. Remember that's how you get your mouth guard to fit perfect, though you dropped in a pot of hot water! And THIS WILL NOT STOP THE SHORTAGE. The agenda involved is not to stop the shortage (I HOPE SOMEONE STEPS UP AND CONVERTS THEIR FACTORIES INTO A N95 PRODUCTION FACILITY). It is to help where there ARE NONE. And as per CDC guidelines "In settings where facemasks are not available, Healthcare professionals might use homemade masks (e.g., bandana, scarf) for care of patients with COVID-19 as a last resort." Ill be darned if I have the ability to help create something better than a bandana for those saving lives and just sit idly by. I appreciate your candor and willingness to ask hard questions and relieve an opposing them with an open mind.
Very nice I wish I could buy one for myself.
She's not even using the correct terminalogy - the extruder isn't what heats the filament.
PLA can be quite porous if printed incorrectly, TPU would probably be a better proposition. I get the feeling these folks are " winging" it and they don't entirely know what they're doing.
...and a ventilator is not a respirator.
Have you posted the design, I have 3 3D printers and would be happy to make these 24/7 for free for the hospitals
Drew Wilkerson Im with you Drew. We all need to help NOW. I’m in the Bay Area
Look up Prusa a 3d printing company in czech republic. They have a lot of valuable info on their website about this and the safety of these types of masks etc.
Hello, I took a 3d printed respirator like this one and made a face gasket with silicon 1 caulk and soap/glycerine. People do this to make cheap molds. The idea is that you let it get to a putty state, build your gasket, put a little soapy water on your face and do a quick press for a custom mold. It created a completely air tight custom seal. If you want pics, then let me know your email and I will send them over.
Are the universities helping with this? I go to Rutgers, and I know they have 3D printers, I think it’s safe to assume that all universities are capable of making 3D printed respirators. Why are they not doing it?
how to download the stl. file
i do think you idea is great but in term of mass production, please think poor people like me cause i really think you guys can come out off 3d print mask idea which cheap also the safety can be used not only for public but also medical staff
Stl file of a different design on www.firedbycorona.com
I have not heard any news of hospitals putting out an open call to the maker community for masks.
But when they do
Great job! Keep it up! We have to work together !!
Why am I waiting? I'm waiting on the files to print this which you failed to link to in this video.
It's on thingiverse, just search for respirator.
www.thingiverse.com/thing:4223817
This design is absolutely pathetic.
Ty because?
TY? You have a better one? You posted a video on how to do it? Lets see it. This design will work and save lives - whats your contribution?
actaully the design is just fine, you need to add a filter material to it. Use 3m furnace filter or 600tpi cotton
Good effort, but pointless. With all those big openings, your better off using a bandana and safety glasses.
They are frames. You have to put in replaceable filters within the frame that are replaced after every use.
Siddharth Ghanta Do you know the model and size of the recommended filter Not specified nor mentioned in the video?
She is demonstrating a solution to a low resource item. If the filter for this is a low resource item, then this is a useless solution. It appears the creator of this video does not know either. That is a very important element left out
@@scottgivens27 3m furnace filters in the filtrete family such as the 1500 advanced alergen are all made from the exact same material as n95 masks
Awesome! Keep printing! If you help / save one person, it already paid off!
Nice work, could you tell me the best CURA SILICER settings for PLA filament /ENDER 3 PRINTER, I want to start doing this for the comunity but I don't have time to inviestigate with CURA, please help me out
This is awesome 👏.
People like to down people trying to
Do something. If you haven’t been a helping factor there shouldn’t be nothing to say. Thanks for helping out to these people.
It's probably more useful to print those face shield brims that are designed to use clear acetate films that are still easy to buy like overhead transparencies, production bottleneck is the n95 filters so I don't see how this helps.
all of the 3m furnace filters in the filtrete family are all made from the same material as a n95 mask... melt blown static charged polyproplyen. You can get over a 1000 filters from one small furnace filter
When we created V-Slot and the OpenBuilds Modular Building System we had no idea that machines made from it would be a part of helping to change the world on such an amazing level!
STL for this?
Hei, I’m the guy behind the original design:) we now have a core team of 10, with literally bindreds of volonteers on slack, and 300+ printers in the network. We have TONS of new stuff coming out in days to come, an english website is launching tomorrow at gladius.si www.thingiverse.com/thing:4222563
that filters nothing, UNUSEFUL
Useless
you need to add a filter to the 3d printed part. either cotton or furnace filter from 3m will work just fine
This is great. Few thoughts. Have your tested as FDM is not airtight... Just try placing in water and watch it soak up water like a sponge. With that you can use coatings...like XTC-3D to make air tight.
I already read this statement somewhere else too and also believe it. My "but" part is, that FDM can act enough air resistance IF there is a large hole in the middle too. I spent my weekend to think/create something similar like in the video (before I saw this) as HEPA filters for cars has a very good price/cm2 if we compare them to another product specific HEPAs. Also they are available in great numbers! I used a SCT SA1145 cabin filter which costs aproximately 5 dollars and can cover 8 pcs of filters (7x7cm).
The big problem with the project above (and yet mine has the same problem) that the HEPA is just dropped inside, so the lowest air resistance is not the HEPA itself but the leakage right next to it. There should be an insulation which blocks the gap between the plastic and the zigzag.
Also a big question is if the HEPA can release particles while in use. Glass filaments get into lungs can't be too healthy.
Lol was that guy's name Coronachulo ??
Then printing machine goods will go out of stock.
This is fun, but also dangerous. There is a risk here that CO2 accumulates inside the mask, which can kill you.
co2 particels are 0.0000125 microns in size, about 1000 times smaller than a virus. it has no issues going out of the mask:)
Can you share the template? I have a 3d printer and we are home, we would like to help.
Marcia Moore www.thingiverse.com/thing:4225667
Would you care to share - thingiverse maybe? Thanks!
I found it on thingiverse, just search for respirator.
Good on you!
How
What do they use for the filter part?
add a p3 particulate filter to it
It takes hours to makes 10 of these.
6 hours
Bless you, Sister.
Dat Ender 3
What if you placed.. 2 coffee filters over this?
one would be just fine