I have had them bounce through inside my welding helmet, Luckily not hitting my eye. I do sometimes even wear safety glasses under my welding helmet. The weld bbs that get in the ear are really painful. Yeah, sometimes I wear ear plugs too. don't forget the respirator lol. When at my big wire wheel I double up with a face shield And safety glasses. Also the leather welding jacket and maybe the apron too. That thing really flings the wires.