Except for tapping, I don't use any coolant when machining titanium. (I use a little air to clear the chips away, but that's it.)
My advice would to buy several end mills and practice on some excess titanium. Using the same grade of material as the production part is highly recommended because...
You need to do your research. I've actually seen folks asking prices above current retail on eBay! :thinking:
I've been working on building up my lathe tooling lately. The two goals were to reduce the cost per cut and to increase my capabilities. Until recently, I only had a few brazed carbide...
Yeah, you'd need a moon dial for that! :crackup:
Seriously, I don't know what I'd do without digital electronic gages. My eyes are getting too old to read vernier scales.
Here's a photo of the gage drawer at my lathe:
I keep a variety of indicators, micrometers, and calipers handy. These are the ones I use most at the lathe. (I have drawers filled with other measuring tools elsewhere in the shop that I've acquired over the years based on various needs.)...
It depends on the diameter of the workpiece and the tolerances required, but I usually like using one of these.
Most of my electronic digital gages are Mitutoyo.
It's nice because they can do the math for you. :D