I finally got around to cutting the threads on my CNC lathe ballscrew. I had delayed it, since it required a special thread for the BearClaw nut, so I finally ordered the die and got around to cutting the threads. Even though I had turned this section down with limited trouble, the die jet didn't want to dig in at first. I ended up annealing the end so I could get it to "take". Once I did that, it cut like butter.