Never heard of that. One thing is that uniform abrasion does not help refine surfaces which will tend to be reduced all over. This means high points are not bought low, some crispness might be lost, and internal dimensions altered. Not to say it shouldn't be tried.

There are power tools that would make the job easier, like a very powerful 2x72 grinder which is always a go to tool around freehand metal shaping. reamers, burrs, die grinders, fresh files, and those mini belt sander. Plus really do tooling to hold the lugs.