Sometimes, a different chip breaker, increasing/decreasing DOC (so it gets into the chip breakers 'zone') and the like can do the trick, but like I said, sometimes you just end up with wool
That said, if you can GET the chip to break, it's a 'good thing'
I don't run CNC at home, but talking to some guys I know who do, when you get into part itimization with CNC, you can do some really non intuitive things, like short partial roughing passes, say you need to do 4 roughs, and a finish - you can do things like rough for a 1/2 lenght, return, rough, return, rough, return, move down to the next 1/2 inch, continue, repeat, and then go from there - that somewhat limits the chip length
Having NOT worked Ti, I don't know how had it is to get to chip, but you can get a lot of stuff to chip
Oddball? Even if you are a small, small shop (don't get much smaller than mine), you'd be surprised how much info you can get from an applications engineer at your favorite carbide vendor. They seem to take somewhat of a long view, and that little shops often become big ones. Call or email them, and describe your problem "I'm turning X diameter 6/4 Ti, to X diameter, in N passes, with a feed of Y, and I'm not getting chip breakage. I'm currently using insert foo, from Mfg Bar, what do you have that you can recommend? I prefer an insert in size ZZZZ to fit my existing holders"
They might say try AAA or if you're willing to change holders, try BBB etc.
