ASS - Another Stackable Shield - clear sheet face shield

This is yet another stackable shield, or ASS for short. (Yes, really)

It's another 3D printable frame for a face shield to help taming COVID-19 transmission probability. Additionally requires an A4 clear sheet and an elastic band.
It can be stack printed, meaning parts can be printed over each other, because the top matches the bottom. More parts per print job means more time printing and less man time managing prints.
A version with included brims just at the end of the frame's arms is available to help bed adhesion where it's most needed without wasting filament on a full brim made by the slicer software.

## HOLE TEMPLATE
The template for the clear sheet holes is the standart ISO 838 A4 European 4 holes:
( )--------80mm--------( )--------80mm--------( )--------80mm--------( )

## PRINT SETTINGS
- Layer Height: 0.25mm
- Line Width: 0.5mm
- Wall Line Count: 3
- No Infill
- No Support

Minimum printer bed dimensions are 160x160mm.
It should print in less th