visieresolidaire model face shield without clips

based on the model V17 from visieresolidaire.orgI modified from the STL ( no access to step file unfortunately ) to get rid of the clips

remove the holes in the model and replace by 4 lock tabs corresponding to 4 holes in A4 sheet, punched with a 2 hole puncher set to A6
using same system as 3dverkstan face shield