During lockdown, with nothing better to do, I replaced my steel 7700 Dura Ace rear axle with a titanium one from an XTR hub. I only cut one end (after making sure I'd have enough threads where I needed them to be). Yes, the "blank" unthreaded center section of the axle is not centered. No biggie. I threaded on a nut beyond where I was going to make the cut, so that after making the cut, I could unthread the nut and clean up any boogered threads. I used a file to replicate the chamfer on the uncut end--I doubt anyone could tell that it had been cut.