file restore

[krv3000]

HI all well i red this in a old engineering book on haw to resharpen old files as you all no i use a file or two so i thought i wood give it a go sos no pics of the files before the proses but got sum after right i sorted me old files out and gave them a scrub with a file card its a proper wire brush for cleaning files then i put them in a tray and covered them with acid old battery acid then left them to soke for have a day and well it did work their was two well worn i left them in for a full day and they came good too have a go and see if you have the same result i don't no the concentration of the acid in the pics you will see one with all the muck floating on the top all this came from all the files right pics