I haven't used cast iron tool rests in years, and will never use them again. I have one Vicmark lathe, and it came with a rod of some sort on top of the straight rest, but it isn't hardened drill rod. After my first time using a hardened drill rod tool rest, which was from Robust, I was hooked. Most of this is because my turning tools just glide over the surface. The rest of the reason is that they just don't dent or ding. As for bowl rests, I always use an S shaped rest. I designed my own, but running the business took up too much of my play time, so I quit. Now Robust is making a similar tool rest, but I haven't seen one yet, so don't really know how they perform. I prefer the S shaped rests because as a production bowl turner, they save a lot of time. You don't have to move your banjo or tool rest around nearly as much as you do if you are using a straight rest. Other benefits of the S shaped rests are that they work well on both inside and outside the bowl, and you can keep your tools closer to the work, meaning you are not hanging out so far off the tool rest. I think Robust has been making the hardened drill rod tool rests longer than anyone out there, and may have been the first to make them. I know Steve Sinner also makes some.
robo hippy