Clipless Face Shield (Mask)

Update - FaceMaskV4
Reinforced joints
Cleaner design
Still 0.3mm layer height
For 1mm nozzle you can print in spiral mode. A slight over extrusion is suggested (1.08) but not too much to close the slit.
For 0.4mm nozzle print using 0% infill, no top or bottom layers, 0.5mm extrusion width, 2 perimeters, again a slight over extrusion (1.08).

Update - 1mmNozcliplessShieldV3
This is an update for those using 1mm nozzles.
To be printed with 0.3mm layer height.
Can be printed using vase mode.
I set extrusion width to 1mm and then extrusion multiplier to 1.2 (I suggest playing with these 2 settings to get the slit in the front right and the walls bonding everywhere else).

New version
Updated - FaceMaskCliplessV2
1) Increased slit from 0.2mm to 0.3mm.
2) Added wave profile in slit for increased clamping ability for a wider range of printers and settings.
3) Flanged open the slit top and bottom by 0.3mm to assist with inserting plastic and preventing elephant foot on first