Hi, I’m a newb and I have been experimenting with tooling on my 12 x 36 Enco lathe. My issue is no matter what I use I’m always ending up with kind of a grooved cut and it is mainly noticeable if I try to polish the work after turning with sandpaper. Really makes the surface finish look like crap. I have tried high speed turning tools, even a horizontal shear. I have tried carbide inserts as well. What’s can I do to get a decent finish? Thanks in advance