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Ramps 1.4 (that's what I've got and what I intend to use) has Z-steppers connected in parallel (see here - http://reprap.org/mediawiki/images/f/f6/RAMPS1.4sc... - Z-MOT and Z-MOT1), which means there's no way they can be controlled separately.You can't change steps per mm on one without changing it on the other.Anyway, I went with a different design already, I'm making a counterweight for my single Z motor at the moment.
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