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https://www.architectsjournal.co.uk/news/hta-turns-its-3d-printers-to-producing-face-masks-for-nhs-staff/10046774.article - dunno if viewable without subscription but they're doing same as you:
A small HTA team, led by senior associate Richard Foxley, is using four printers, relocated from its Edinburgh and London offices to employees’ homes, to make the personal protective equipment (PPE). It hopes to make between 50 and 60 masks a day when fully up to speed.
HTA prints head pieces, which are then delivered by DHL to a central hub in Manchester to have plastic visors fitted. Once assembled, the masks are sterilised and packaged, and put into the NHS supply chain.
First five mask components finished. Five more nearly done and another five will be done by morning.