ST15 Brand new to our shop. This machine, being the smallest of our lathes, is great for many applications, smaller parts mostly. SL20 Along with the VF2, this is one of the two machines we got started with back in 2007. great machine for many applications. ST30Y The powerhouse of the three lathes is the ST30Y. This is one of our newer machines. Features like live tooling make it easier for us to get jobs done quicker for our customers.