Here is our 3d printed face shield design. It does only requires a regular rubber band to secure it on head. So no need to find elastic headwrap.

You only need a 5 hole puncher to punch the holes for plastic shielding like this one: https://www.amazon.com/gp/product/B00006JNWR/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1

Adjust the puncher holes like in the picture attached.

And additional punch heads are from here: https://www.amazon.com/gp/product/B000FNDLF8/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1

12x12 inch .020 mil thickness plastic film (such as acetate or duralar film) is required for adequate protection from here: https://www.amazon.com/gp/product/B01A2U0PZW/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1