Have seen it used (and advertised) to build up a worn hook on a sxs rather than shimming. Works fine, use a flash of copper on the steel, then nickel. Takes time to get a buildup.
Used for years to salvage railway axles (tolerance was +/- .0005)
Buildup could be as much as .006 - takes quite a while.


Dumb, but learning...Prof Em, BSc(ME), CAE (FYI)