Lol half
Those things are terrifying. There's an old mafia bro up in your area that was using those and took a coil spring to the safety glasses. Damn near lost an eye/face. Doubt he'll see this but @slater
I picked up this contraption a while back and it is significantly better for the user's health
https://www.amazon.com/dp/B01DP2CDJU..._eL9tFb465WYTM