While there are dozens, perhaps hundreds, of projects seeking to quickly design emergency medical equipment, few have received official certifications.
One that has is a design for a 3D printable respirator, created by the Czech Institute of Computer Science, Robotics and Cybernetics (CIIRC CTU). They say:
“We received certified approval for the RP95-3D respirator at the end of last week. It was certified as an FFP3 class safety half mask with interchangeable external filters. The selected material and technology guarantees optimal properties – the respirator is flexible, light and impermeable.”
“The CIIRC RP95-3D is a personal protective equipment – half-mask – with a P3 replaceable external filter which has been certified as a kit according to EN 140:1999 norm. It meets the same or higher degree of protection as a FFP3 class respirator.”
This is something that is immediately meaningful, as the countless DIY designs floating about the Internet largely have no official certifications and sometimes questionable medical thought behind the design. Certified designs are what is needed now, not guesses by well-meaning folks.
The Czech design is apparently intended for production on HP MJF 3D printers (MJF 4200 and MJF 5200 only at this time) and apparently can be done if the right materials (PA-12) are on hand and the design is provided. When complete, the respirator will require a replaceable SIGMA P3 filter.
RP95-3D Respirator Design
Fortunately, the creators have provided the design to the public — worldwide — at no charge. They have created a portal where you can download the 3D model files. However, in order to ensure the downloader is actually operating the required HP equipment, they require you to enter your machine’s serial number.
This makes much sense, as the certification was obtained for a product made on the HP machine — the same design made on other equipment is not certified.
The creators do say it is possible to produce the same respirator on the smaller HP MJF 540, but they don’t recommend doing so as it is much more productive to produce many units on the recommended larger machines.
Making the RP95-3D Respirator
For other non-MJF 3D printer operators, they explain that they have not certified the design on any other machines at this time.
For example, they experimented with SLS 3D printing technology and found that the resulting parts were too porous to properly seal the respirator, even with a post-print application of sealant. They say:
“MJF printing does not create a grid. The resulting mask is perfectly compact and completely impermeable even at the microscopic level.”
It is therefore recommended that you do not bother attempting to 3D print this design on alternative equipment at this time. However, the creators do say they are considering other methods of production.
In particular, they are currently testing an approach to use injection molding to create the same design. However, the testing is still underway as of this writing. Those readers with injection molding equipment may wish to watch for progress in this area.
HP MJF Operators Make Respirators
If you happen to operate one or more HP MJF 4200 or 5200 3D printers and have a supply of PA-12 material, you could also make these respirators very quickly. It seems that one machine could produce between 50-60 per day. For operations with 10 machines, that corresponds to around 4,000 units per week, which could be significant in some regions.
Kerry Stevenson, aka "General Fabb" has been writing Fabbaloo posts since he launched the venture in 2007, with an intention to promote and grow the incredible technology of 3D printing across the world. So far, it seems to be working!
Looking for more stories on 3D Printing? Try our Archive where thousands of our previous posts are easily found.
We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
Welcome to Fabbaloo, one of the world’s oldest online news sources for 3D printing news. We’ve been in operation since 2007, where we first started examining the state of 3D printers. These devices are now relatively common among some circles in today’s world, but years ago it was extremely rare to see a 3D printer or even a 3D printed object.
At that time it was challenging to find any 3D printing news, so we decided to make our own site that covered 3D printer news, and even associated technologies like 3D scanning and 3D modeling. Today it is common to find 3D printers in schools, workshops and makerspaces, and you probably have been using 3D printed objects without even knowing they were 3D printed.
Today’s industry has finally taken up the challenge by installing thousands of industrial 3D printers, each producing previously impossible 3D printed parts that make today’s society far more efficient. The aerospace industry in particular has been producing many 3D printed parts, some even for flight critical purposes.
If you want to learn about 3D printers, then there’s no better place than Fabbaloo’s 3D printer news to see the latest happenings.
Strictly Necessary Cookies
Strictly Necessary Cookie should be enabled at all times so that we can save your preferences for cookie settings.
If you disable this cookie, we will not be able to save your preferences. This means that every time you visit this website you will need to enable or disable cookies again.