What would be the best lathe speciality tool or lathe tool you ever bought or have. When I bought my PM 90 there was this homemade tail stock live center (no point) that was with it. It was froze up, but I got it freed up soaking in oil. I have never seen anything like it and didn't really know what it was for. I now use it a lot as I can make centers for it for various jamb chuck options. I'll post a picture later. What's your favorite?