This has been mentioned in some earlier posts. Tonight I was able to get some better pictures so here it is again. The three essentials for die cutting threads in structural titanium. First, threading the stuff takes a lot of force and round bar slips in the chuck. The hex is cut first so a wrench can be used to turn the bolt while the threads are cut. Second, cutting lube is essential. There are all sorts of proprietary cutting fluids in this shop made for ti and other exotic metals. None work for this. Basic anti-sieze is the only lube that works for threading, in my experience. Last, the uncut tops of the threads are barely visible on the threaded shaft. It takes some trial and error to figger out the right diameter. The shaft dia is 0.300 inches for this M8x1.25 bolt. This is a bit smaller than it would be for other metals.