Show lail a eav deiv I 1 lie ilea an expert in files his has given homo some 11 erections ions ng as to tho the best nays to use these necessary implements lie says that a now ilioof file of tery nery high temper should first be used on brass or cast iron af after ter the first sharpness is gone from it it answers quite aswell as well for wrought iron and steel sometimes new filemu files v ill tear tho the surface of wrought iron and steel to such an extent as to become very an and cause additional work very few mechanics thoroughly understand the uso use of files and the methods by which they are utilized to the greatest advantage I 1 iles bite rolled metal much more quickly an I 1 easily than cast the there tore fore it requires a sharper file foran for brasa ae and ond cat iron thin than for the wrought ar or tides or tor for steel it if files ire are gradually adapter to their best uses they null guo gine much longer service than when they are indiscriminately employed |