The National 3D Printing Society’s design appears to be a variant of the Verkstan. Compatible with 3D printing and injection moulding, it is being 3D printed by volunteers in PLA and PETG following a standardised procedure, with centralised quality control, warehousing and distribution.
Comfort: Narrow headband (which just meets UK regulations) and sprung sides make it likely to be less comfortable than other designs for sustained use. May not conform well to those with very small or large heads. Fits close to the face.
Ease of use: Easy donning and doffing but not adjustable in any way.
Safety: Provides good coverage in relation to UK regulatory requirements because the landscape A4 sheet is close to the face, potentially limited space for goggles/glasses or respirators. No protection from droplets falling over the top of the visor.
UK approval: CE marking application in progress as at May 2020.
Sterilisation: Many of the processes tested by prusa and verified by Czech laboratories may be used, but our understanding is that sterilisation experts in hospitals remain skeptical, despite wiping down and visor reuse becoming common practice in the current circumstances. This reservation remains because partially porous 3D printed materials are notoriously difficult to reliably sterilise. It is acceptable for the visor itself to be cleaned with wipes.