Відео

holy crap thats awsome. Darwin sent me

beautiful music

Very nice exposure control!

What a nice looking screen..!!

I hope you can capture even more tonight.

Nice

Woo looks great!

What camera setup are you using? This is awesome

What's going on at ground level?

Very nice ! The best 🎉

Very nice, had thought of testing that out myself. Might give it a try this summer.

Nice time lapse of the milky way.

Very nice video from IPC-color4k-T, thanks a lot for sharing!

I have confirmation that the ARE satellites. Never knew there were THAT many.

Hello nice job, what kind of fabric did you use to cover the box? Do you happen to have a link to it? Best regards Kim

Can you please message me with more specific instructions on how to do this? Do you have a write up somewhere? I would really appreciate it!

do you know if carbon fiber filled nylon is stronger and less brittle than carbon fiber filled PC? I want to print some parts but i dont want something that will become brittle over time. i need something that is strong, high temp resistant, and have tiny bit of flexibility rather than brittle to cause it to crack or snap. Please let me know if you have experience with both

Your post on the Prusaforums put me on nearly the same journey as you, and its been quite the journey trying to eliminate VFAs and have acceptably quiet operation. The second came after realizing that most of the 0.9 degree stepper motors I tried were loud as hell on my CR-6 SE. Stepperonline motors were louder than stock and didn't improve VFAs much, Usongshine motors were quieter than Stepperonline but didn't do anything for VFAs and lost steps. LDO motors were the only ones to make a very noticeable difference for VFAs but were so loud and vibratory on my machines =(, I tried a few different chopper timings in Marlin, 2208 drivers, 2209 drivers, set up Klipper thinking it might help with noise (it didn't, but Klipper is a massive upgrade either way), but could not get them quiet so I put my stock Moons 1.8 stepper motors back on, which work great, they are precise and SILENT but the VFAs live on =(. I figured I'd stop the pursuit of eliminating VFAs since I want quiet and no VFAs which don't seem to mix. I know we have different machines, but in your experience are the Moons quieter than the LDOs? I've been considering buying them, but the cost is more than double LDOs, plus shipping right now is like $30-40 per motor on Amazon, or $40 total plus longer shipping if I buy from Moons website.

Cool

Its PLA+ PC piriline CF

hmm your ghosting is far more on the first.

How si the noise? does it get less noisy?

High there! Not sure if you still use this extruder. I'm trying to get some help during assembly. Having issues with the filament sensor install. Do you know someone I can talk to?

that stuff doesn't seem to be really anything near PC. it's probably petg+pc or nylon+PC tbh!

Chinese medicine is run by university teaching doctors "PROTOCALL" only! Not teaching them how to heal. Protocall can hurt but if they do not go by it, they can lose their license. In America since COVID (coming from China) OUR doctors are taught "PROTOCALL" only! Hospitals threaten doctors if they try and use hydroxy or iver? Why!!! We know why. Sad but true. And this device is something that can be manufactured in mass with tolerances and strict guidelines that are not a g'damn youtube video. Think of it? A doctor! Giving instructions on assembly of a PREMIER MEDICAL DEVICE ON UA-cam? <<< How obsurd!

Very helpfull. Thanks

Screenshots of your Prusa slicer settings would be appreciated. I know you posted them in a comment but it's too jumbled to make sense of.

How's the noise tho

Having a hard time finding all the stuff needed for this build, wish there were at kit.

Love this filament and the design of the BNBSX. As you've noted below, it's non-optional to first dry the stuff really well, but once dried, I've not found a nicer printing filament. So much so, in fact, the I've printed all of the pieces to my own BNBSX, except for the geared wheel, from the CF filled PC. I'm assembling now and will be swapping out the Skelestruder I've been running for 6 months on my mk3s tonight. Eager to see how it does with the Mosquito Hotend that'll be inside of it.

It is far more efficient to laser cut the band components from 0.8-1.0mm PETG.

You sir are god sent i am an ent surgeon and your model makes it possible to have attachment on conventional ent head light and do all work ,, some thing which routine paprs can not do .. simply brilliant

Is it possible for you to show it off going any slower ? 😜

Bag filter adapter with 22 mm internal diameter is now the standard style. More and more HMEF's with only 17 mm / 22 mm external diameter ends have appeared. Switching to 22 mm internal diameter adapter has side benefit of flipping the HMEF orientation to place sampling ports to top of the filter. That means an open sampling port won't bypass the filter, unlike the original orientation with sampling port below the filter element.

Main project page is at bunnyscience.dozuki.com/Guide/Bunny+Science+HALO+Respirator+(Buildable+PAPR)/4

Cool project. Thanks.

Brilliant. AL, PhD

A couple safety features that should be emphasized 1. Filter in this PAPR is one with known viral level filtration. Rather than attempting to create a filter de novo, we use an approved and tested anesthesia ventilator filter - a type that is used to protect millions of patients during surgeries every year. 2. That silly looking hood not only acts as an omnidirectional protector, but it is also the inspiratory reserve volume. With a rigid system that lacks inspiratory reserve volume, an inspired breath can overrun a fan/filter flow rate. That results in negative pressure - which requires a perfect seal to maintain isolation. The unstented, bag freely deflates if one takes a breath faster than the fan & filter can deliver. Negative pressure never occurs because the bag/hood intentionally lacks structure. It simply collapses slightly and at worst achieves equalized pressure with outside. We don't ever want pressure to go negative.

Thanks Dr GK. I'm the guy who was posting as coronavirusnotalone (Howard). We have printed up 5-20 of these and are shipping them out to Kansas nurses and others. Some pictures are here (parts printed... no pictures with the nurses wearing, yet): photos.google.com/share/AF1QipOTCNHG_Q5h4JnI-2KyU2yTCHKal5PNIvI4nLN7QDbIDS2Y0yn5uNJsXGTd1OWuDQ?key=MG81X3lNUEJUdWZMNXZJa3ZLMGlaREUxcEo3VTVR Thank you for your design.

You need to crank up your "non print moves" speed. Will help a lot with filaments that like to ooze. You should be able to get away with 180mm/sec on the MK3

I just shared your design (via this video) with facebook.com/groups/opensourcecovid19medicalsupplies/ They have a few ongoing PAPR homebrew projects --I'm the same person as coronavirusnotalonel this is my other youtube account.

Could you provide part number or site ? Thanks!

This is a brilliant design!!! What fan are you using ? Where did you aquire it ?

Well done really superb simplicity..

This is great. We were working on a rigid bucket design (to mount heavier fan equipment to the top), but this design is much lighter and showed a way to do it with smaller components. OUR NEXT ITERATION: Building on your design, we want to see if we can eliminate the 3d printing with a simple, familiar item: baseball caps. We hope to mount the fan and filter on the lip of the baseball cap. Another idea is to mount the exhaust nearer to the neck. For low-income country applications, we think some structural components can be made with cardboard. Thank you so much! If you are interested: I'm @hocho on this discord server: discord.gg/H3jUmar (all welcome, you can login via browser or mobile, and expect to be vetted lightly) or chongare@gmail.com or 607-279-3623 (text/phone) In it to make an impact and move the needle. Working 12hr days 7 days a week. Mainly, i'm organizing and connecting people. I'm here to make your life (the designer/HCP's) easier by offloading some of the outreach/publicity; i.e. filtering your interactions so that you don't repeat the same FAQ answers.

Freaking BRILLIANT! excellent design.

Yes. It is time to move forward, beyond masks. PAPR's provide better protection, are more comfortable for long duration wear, and don't rely on an absolutely perfect seal between mask and face. With less contagious threats, you could get away with a little leak. No so with this corona virus. It spreads not just via large droplets but also micro-aerosolized mist generated by even just talking. How do masks get a good seal? Perfect shape for each face and a lot of strap tension. Even commercial masks have to be fit tested and a lot of us users don't get a seal with every masks. It's sometimes impossible to get a perfect fit that actually seals. Also, any bit of stubble or hair breaks the seal. Smile too much and break the seal. Tighten the straps and in a few hours you destroy your face. Sucking air through a filter puts that mask/face seal under negative pressure. That's really a challenge with every breath of how good your seal is maintained. Yes, masks are standard - when higher level protection like a PAPR are not available or being reserved. PAPR's are simply harder to obtain in number. The 3D community has a chance to make high level protection PAPR's, but instead tons and tons of shields and masks get created. It's harder to test a PAPR. You have to balance inflow, outflow, filtering. You must test its CO2 clearance. That requires experience and access to gas monitoring equipment and familiarity with actual PPE and ventilator usage. I'm a decades experienced MD anesthesiologist and its because I can combine my real world clinical knowledge and build skills that this PAPR could be created as practical, usable and deployable PAPR. So, no, please don't all go out and design PAPR's unless you have the requisite clinical experience and ability to measure their effects with gas composition and physiologic monitoring like I do. This design has been tested. It's not regulatory approved (yet), but it is deployable now. I'm delivering eight of the fan configured units to my anesthesia partners today. They have eagerly awaited the units, but I am only a single printer. PAPR's produces an entirely enclosed, safe breathing environment without need for an absolutely perfect seal on your face. The fan does the work of pulling air through the filter. So, you don't get fatigued using your lung power. You can talk and breath almost as if you didn't have anything on. It's better isolation than a mask due to high level filtering and omnidirectional protection by its "hood." No - NOT another mask, not from this clinician/designer.

Your linked webpage from the NIH website does not work. Where are the build instructions? What motor/fan is used for the modeled parts?

Thats a pretty clever design

REMINDER ABOUT OXYGEN FIRE HAZARD: Use of oxygen as the breathing gas is a fire hazard just as with any other use of high FiO2. My strong recommendation is to use the fan PAPR configuration. If using the oxygen driven configuration, remain mindful of the fire hazard.