To file or not to file?

[jim currie]

if you do file them its best to re-tin with a sal ammoniac block its a white square block , available at most real hardware stores or welding supply shops once you file tip down heat it up rub it in the sal ammoniac block then apply solder rub on block again . a block will last the average person a life time . some including me dissolve a bit of the sal in water them put on sponge ( only need to do this on new sponge) then wipe it on sponge before you start to solder. if sponge drys out just re-wet with water.
Jim