I see a lot of people over-spec steppers here. That said, 60oz might be cutting it a little close. If you have them already or can get them super-cheap as surplus, I'd give them a try. Otherwise, the price difference between a 120oz stepper and a 300oz one is often not much more than $10, so better to go a little larger than a little smaller.
Sherline supplies their CNC mills with 130oz-in motors, IIRC. I use the same on the X and Y of my X1, which is well over twice the weight of the Sherline, though 200oz might allow me to tighten things up a tad more or run faster, not that I've felt much of a need for that. I'd probably go with those (~120s) or with something in the low 200s, in case you decide to build something larger.
I have the HobbyCNC Pro driver and am very happy with it. I run a 24V PSU and it goes fast enough to get me in trouble. I've used both Mach and EMC2 to drive it. For CAD I've used the free download from eMachineShop that lets you export DXFs and I use CamBam to generate G-code. You can spend days, weeks, months, or years on any one of these items and only scratch the surface. But if you take each step one at a time you can eventually get through enough of each to be useful.  |