I'd look for steppers from whatever discard devices or new in catalogs, just as older hard drives used for spindle and heads. They're simple to control vs. supporting head positioning & feedback just to keep spindle rpm stable. As Dilbert said, given you need head function, you're probably best off with almost the entire drive. I suppose it'd work if that's an acceptable form factor.
But hey, let us know if you find some cool workaround!
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There are a vast number of people who are uninformed and heavily propagandized, but fundamentally decent. The propaganda that inundates them is effective when unchallenged, but much of it goes only skin deep. If they can be brought to raise questions and apply their decent instincts and basic intelligence, many people quickly escape the confines of the doctrinal system and are willing to do something to help others who are really suffering and oppressed." -Manufacturing Consent: Noam Chomsky and the Media, p. 195
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