What an awesome website! This has definately fed my thirst for knowledge on CNC design except for one thing.
Why is it that it's only possible to cut soft aluminum? My main purpose for a CNC machine would be to cut .015"-.03" sheets of Stainless Steel or good grade titanium. What would need to be done in order to build a machine capable of performing this task? I wanted to cut large sheets at a time, so I was figuring on designing a gantry style one, very similar to the one pictured herewith the dual lead screws (probably roller screws, something I saw on here) for the X and then the Y and Z be held up above, allowing cutting of a 24"x24" sheet at a time.HTML Code:http://www.kellyware.com/images/Kcnc_2_sm.jpg
If it is not possible to do this through the machine style above, what needs to be changed in order to achieve my goal? Are there any websites which give more information on mainly metal cutting machines? I've mostly found ones that focus on wood, even more so ones focused on engraving.