[post_page_title]So many reasons[/post_page_title]
Where do we start? The idea seems good. Protecting his face is definitely the right plan. Sadly, the execution of the idea doesn’t seem so right. Using a circular saw is dangerous. The plastic bag probably won’t be effective against any small bits from the metal the man in the photo is cutting.
The sparks can also easily burn through his protective plastic shield. Should he survive all that, he might end up just suffocating himself. We hope none of that actually happens and he gets the job done, unscathed.