New Jaws for the Vice

This old record No. 6 vice belonged to my grandfather. Over the years, the jaws had become cracked. I have lots of old files and had a brainwave that these would be ideal for making replacement jaws. Files are made from hardened and tempered steel, and have slanted, ridged teeth which I reckoned would  be excellent for gripping stuff in a vice. I cut out rectangular sections of the correct dimensions using an angle grinder. The steel was too hard to drill, so I had to anneal it by heating to a red heat with a blow torch in the vicinity of the mounting holes and allowed it to cool slowly. Once the holes were drilled, they were countersinked.