mr fixit wrote:
Last night I started a new can and turned gr5 Ti for the first time on my 12" Logan. I have been pretty apprehensive about trying to turn any titanium after hearing lots of people talk about it. Truth is, it was great! It turned almost as easy as 17-4 which I was able to cut like butter. It was much better than 4130.
Ti isn't bad at all for normal lathe turning operations. Where you run into difficulty is drilling deep holes, tapping holes or trying to mill slots where the cutter is working full diameter. Ti has extremely low thermal conductivity, so tooling heats up quickly. It's also a very "springy" metal, which is why deep drilling and (especially) tapping are a challenge.