Comfort Visor Shield (Europe ISO838)

This Thing is a slightly modified version of the original Design from Erik Cederberg.

File Source: https://www.youmagine.com/designs/protective-visor-by-3dverkstan

The pressure points / areas in contact with the head have been increased in size for better force distribution. This also allows for application of adhesive foam pads (see pictures), which overall increases comfort. Additionally, the original geometry has been copied and reduced, to create a lower frame for forming and reinforcing the transparent shield (0.3mm thickness).

The original frame was designed to be used without any additional materials (except for the shield), yet I advise to use window seal strips (see pictures) or (buttonhole) elastic band to avoid slippage of the shield. Both can be found in hardware or sewing supply stores. In some cases you may even want to use both (e.g. on a smaller than average head).

Provided are .stl files, as well as .3mf files (to be loaded into Cura as projects) and the print profile (.curaprofile). The .3mf files are pre-programmed but require you to TURN OFF ‘AUTOMATICALLY DROP MODELS TO THE BUILDPLATE’ function in the preferences menu of cura (see pictures). The PETG and PLA set print in around 2 hours each (conservative settings).

Stacking of this design is technically still possible, but will decrease surface finish and increase material use. This will reduce the cleanability and durability of the parts!

Lastly, the original design is meant to be printed in PETG, yet PLA seems to be used more frequently. PLA has a slightly higher Young’s Modulus (elastic modulus), making it overall stiffer. Therefore, a PLA version has been created to compensate for the increase of pressure. This change only applies to the upper frame and the files are named accordingly.

Source: https://github.com/superjamie/lazyweb/wiki/3D-Printing-Filament-Properties