google for some kitchendrawer and m8threadrod cnc like projectlog.
my experience is that learning and cheap and fast is a very bad combo.
when you need to keep it cheap and go for salvaging printersteppermotors and mdf and kitchendrawerslides you'll have a hack of time getting it all aligned not even to mention the electronics.That's is the having fun way i guess but ain't suitable when you don't have months or like me years to be fooling around.
tell us what tools you have at your disposal already ,maybe that'll brighten up your chances.
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Finally CHIPS you can have as much as you can without the doc. complainting about your cholesterol.