Simple, acetate (A4 format) is mounted by applying pressure. Comfortable, the headband distributes pressure by copying the user's temple. Extra protection, a visor blocks splashes when the user bends down. Adjustable, now the 4mm elastic band has two slides that simplify customization. Stable, a slide connects the headband to the acetate holder. Optimized, in PLA or PETG in most printers, times of 1:30 (average) are achieved with 0.4 mm nozzles.