No quick change capability Jimmy. Just a stack of gears with various tooth counts that must be changed out to achieve the combinations listed in the table in one picture I posted.
Actually the little 7X12 will work steel, stainless steel AND ....... 6AL-4V Titanium (I have done several small titanium parts with mine). You just have to take it slow by doing smaller cuts than with a larger lathe. Titanium is a little tricky since the heat stays in the work rather than leaving with the chips and it also work hardens if not cut at the right speed (a lesson I learned rather quickly). It also helps to start out with NO knowledge and no mentors to tell you what you can or can't do with small machines!
Above is a Titanium threaded test piece. Blue spot at bottom of picture is electro anodized to show the piece IS titanium. Titanium is about the easiest to anodize metal there is. No baths or dye is necessary. The color is strictly voltage dependent.
My two machines cost me about $800 14 or so years ago. Yes I am a slow learner but in my defence I had a house to move and remodel right after getting both machines which consequently sat in their crates for nearly 12 years while I tended to getting the "Ranch" and "Ranch House" set up.
Currently I think it would cost about $1600 to $1800 to pick them up from somewhere like Grizzly.com and probably another 5 to 8 hundred for basic tooling.
For internal threading I prefer a spiral tap. I find it far easier to use in most instances using the mill to drive it.
I still have not yet "milled" any parts but as you can see the mill vice contains an unborn "Breech" which is usually a bad term to use anywhere near the term unborn but in this case is not an issue!
(Sorry just trying a bit of This Old Tony style humor).
