One of these: High-Z S-1000/T CNC Router & CNC Engraver with ball screws ? One has to wonder, with a Z axis travel of 110 mm, it's "High Z" compared to what? Since the blanks used for necks on most electric guitars are about 70mm thick or so, that doesn't leave enough headroom for a tool long enough to cut to the bottom of it to clear the workpiece. So no, I don't think this is a suitable machine for making guitars, although it looks adequate for flat cut-out work (or, as the site suggests, for conversion to a plasma cutter). And as you point out, it lacks a spindle of any sort. I'd say keep looking.