Vault-Tec + Easypaint kit
thingiverse
Should you wish new brand for something. Goes well with magnetic sticker foil ;) Easypaint kit makes the painting as quick and easy as possible. I have used airbrush, but it'll do for spray paint or even brush. Check the artstation project for visual demonstration: https://www.artstation.com/artwork/m8vn6e I have printed the mask on 0.1 layer to give it few crossings and make it dense. Ironing will help if you struggle to make the mask hole free ;) There's a small handle on the round part of mask to make it possible to remove it when paint is finished.
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