Thinness, I would presume. Titanium is hard for tooling.

Yeah 3D printing may be bad for volume production, but CNCing a metal part is an order of magnitude worse, as you can't even batch runs together.

What. Who says you can't batch CNC?

	▲	moffkalast 3 days ago \| parent [-]
		I was thinking 5 axis, I suppose you could batch simple parts on a 3 axis mill, but that limits you a lot in terms of what you can make?