Face shield for 150mm print bed (A4-2 hole punch, A4-4hole punch and Prusa hole pattern)

UPDATE3: Uploaded STEP files and F360 files.

UPDATE2: Updated model that uses a standard 4-hole punch (80mm between all holes)

UPDATE: I have created a model that fits the original Prusa hole pattern (60 mm between the middle holes and 79mm between the outer ones )

This frame fits on a 150mm print surface and can be used with an A4 sheet of binder transparent cover. Holes are punched with a standard hole puncher (x2 sets, 80 mm distance between holes) on the A6 setting (34mm from each side- A6 setting on the hole punch).