Yes you could use a 00 for instance. with the tip turned at an angle the material would burn away with not loosing the kurf.

Try it on a 1/8" piece forst then move down to .030 I am not going to say it is easy. I have done it several times. It doesn't always come out how I would like it to. I mainly use a plasma cutter for small thin material but when you do not have the plasma you use what you have. Now tring to cut a perfect shape will not work with this process. you still need to grind and feather the material. If you turn the oxy to an oxyidising flame you can do the same but have more control. It all takes practace
robert