Arguably, mine aren't even usable let alone reusable, given that they are made of non suitable plastic in a non sterile environment but we are where we are!
Tongue in cheek response aside, I assume that they will be regarded as disposable as 3d printed objects are virtually impossible to sterilise.
55 full face visors printed and shipped to a central depot for distribution to hospitals.
My print nozzle has worn out so won't be able to make any more PPE until I can find a replacement.