Yes, many years ago I seized a plunger A10, a big end bolt carved 3/4 of the way through the case with a crack showing on the outside. I cleaned it up and set Araldite into the gouge. Worked a treat. My Land Rover rear axle has a badly welded diff pan, well brazed, probably by a squaddy in the 1970s, its got some pin holes in the brazing, plastic metal has kept the oil in for 10 years.