The NHS is in dire need of as many protective facemasks as possible. Working directly with the NHS we have an agreed visor design which we are printing and sending directly into the existing supply chain in order to get them to the frontline staff as quickly as possible. Information on the visor design, model files and operating procedures is available here. Download and start printing now!


We are 3D printing the visor section of the face masks only, these are passed to a central distribution hub where MedSupplyDrive will add the protective screen and distribute throughout the NHS network to where they are needed most. The design will be updated as further feedback is collected but download the latest design here now. There is a .stl file and .gcode file available.


For our efforts to work at scale, it’s important that we all work together in the same way and provide a consistent product to the frontline workers. They have enough to worry about already, let's not add to it by all doing different things. The Standard Operating Procedure document explains the process for printing and getting your visors ready for distribution. Read this and start printing.


Once you’ve downloaded the Get Started information it’s a simple process: 

  1. First off, wash your hands.
  2. Create as sterile an environment as possible for your printer, check you have the right printing material and start printing. Keep potential contaminants as far away from the printer as possible whilst printing (including pets & children).
  3. Before and after each print, sterilise the print bed with 70% isopropyl alcohol and check the filament reel to ensure you won’t run out during the next print.
  4. Use latex gloves where possible to handle the finished prints and bag them in sealable sandwich bags/ziplock bags as quickly as possible, ready to post.
  5. Once you have a suitable batch of visors, follow the instructions in the Standard Operating Procedures document to send them out.

Remember, these visors are being made to be used in hospitals, if you or anyone who has access to the area in which you print develops symptoms of COVID-19, or you have any doubts whatsoever about your health, please stop printing immediately and do not send in any recently printed visors. 

Technical Specs

The preferred printing material is PETG, if this is not available then PLA is also acceptable. Please don’t print with any other materials. 

Filament colour does not matter, any colours will be accepted. For those using the .stl file, the following settings will give you the fastest print times:

  • Temperature: Follow specified temperatures provided to you by your materials supplier
  • Print Speed: 50mm/s
  • Layer Height:
  • 0.4mm (Standard Hotend)
  • 0.8mm (High-flow Hotend)
  • Shell: 20
  • Wall width:
  • 0.4mm nozzle -> Set line width to 0.5
  • 0.6mm nozzle -> Set line width to 0.66
  • 0.8mm nozzle -> Set line width to 0.8mm
  • 1.0mm nozzle -> Set line width to 1.0mm -> 50% overlap
  • 1.2mm nozzle -> Set line width to 1.33mm -> 50% overlap


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