This may be pertinent- I have had several old Schrade fixed blades come in because the pommel had worked loose and was rocking back and forth, letting the stacked leather loosen up. Some of these have got the hollow pommel basically sitting on the last spacer, usually one of plastic of some kind, with a "claw" of the tang just shy of the base of the pommel. There is a stiff metal compound that is either poured or swaged into the hollow pommel which sets around the "claw" and secures the fit, for awhile at least. Drilling and picking it out is a major pain, I usually end up brazing an all thread extension to the tang, and use a threaded taper plug assembly that I grind flush for a nearly undetectable repair. What is this metal? Seems a little stiffer than solder.