Render by Christopher Kopic
As the world works together to overcome the unprecedented challenges brought on by the COVID-19 pandemic, the team at the Bauhaus Form + Function Lab is currently working with partners and collaborators across the region and across Europe to share relevant designs and optimizations for personal hygiene equipment and other materials, which can be produced with the standard tools found in prototype labs, fablabs, makerspaces and individual studios in communities around the globe.
The Fine Print: We strongly urge everyone to adhere to the strictest hygiene measures and to consult with local authorities before beginning production or distribution. While these designs are being shared in good faith, the BFFL and Bauhaus-Universität Weimar do not guarantee the suitability for use, merchantability, or fitness for particular purpose of the designs listed below, and do not assume liability arising from their production or use. These designs are presented as research for individual experimentation and are not intended for production or use as medical products. The production and use of these designs is at your own risk. Please be aware that the designs below are the property of their respective creators and are protected by various open source licenses. Feel free to share the resources linked here with other partners and institutions.
One material. One process. One minute.
Co-developed by Prof. Andreas Mühlenberend and Vertr.-Prof. Jason Reizner, this visor is constructed from two to three components laser cut from a single material (transparent 0.5mm PETG or PET film), and is presented as a universal design (‘one size fits all’) requiring no 3D printing or elastics. This design represents a vast improvement in production throughput compared with 3D printing, and ensures maximum usage of material: Eight visors can be cut from 1000x600mm PETG sheet in under five minutes. Preliminary tests indicate that PETG is resistant to disinfection agents including isopropyl alcohol, quaternary ammonium compounds and hydrogen peroxide solution. Many thanks to Kristian Gohlke and Darko Velazquez for their invaluable support with development, process optimization and communication.
This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.
This visor is our current focus for local production where 0.5mm PETG film or a laser cutter may not be available. This design can be optimized to print in under 40 minutes (Prusa Mk3, 0.4mm Nozzle) or 25 minutes (Prusa Mk3, 0.8mm Nozzle) and requires only 16g of filament per unit. We are currently producing these from PETG, although PLA or ABS can also be used if necessary. The front shield can be produced from a variety of materials, including consumer A4-size transparency films, and does not require the use of a laser cutter.
This visor consists of two 3D-printed frame components and a lasercut PETG shield. While this robust design has a preliminary approval for medical use in the Czech Republic, it is more resource intensive to produce, normally requiring roughly three hours print time (Prusa Mk3, 0.4mm Nozzle) and ~60 grams of PETG filament per unit. Our research has shown that the installation of a 0.8mm nozzle can reduce production time to under two hours. Production stacking has been demonstrated to work with this design, reducing the need for manual intervention.
This formula can be produced using isopropyl alcohol or ethanol, hydrogen peroxide and glycerol. BFFL staff have been using this hand sanitizer daily for the past several months.
Questions? Comments? Something to share?
Get in touch with us at jason.reizner [at] uni-weimar.de
Share your photos of the BauhausUniVisor on social media with the hashtag #BauhausUniVisor