Sharpening a huge drill bit - GIF

[Papa Smurf]

Having grown up the son of an ophthalmologist I was very aware of eye protection. I later worked as a government inspector of occupational heath and safety and my own hearing protection became important to me, to the extent that I wore my moulded hearing protectors while cutting my grass - very unusual in the society I lived in. Sadly, my meticulous care did not prevent hearing loss in one ear later in life, but the audiologist attributes that to a viral infection. I have a valid excuse for not hearing my wife if my good ear is covered by the pillow!