dddd

Unless you know the machinist or they've got good references from trusted sources, it will be a crap-shoot as to whether or not the work gets done as you hope it will.

It's the same any time you hire someone to do anything, especially outside of what could be considered their most familiar tasks.

It's why I became such a staunch do-it-yourselfer and I've taught myself to always try to take the time needed for thinking through and completing the task at hand.

I'm about to test my idea (twisting while pounding) on a very stubbornly-stuck post in a Bob Jackson frame. Wish me well. It has resisted twisting (even after years of soaking) even with dry ice applied to the point of heavy white frost everywhere, so to me represents a near worst-case of stuck alloy post in steel frame.
Stay tuned!