[rfrey]

There are several people who have documented builds of epoxy granite mills. Much bigger than what you described generally, but still garage machines. https://www.youtube.com/channel/UCIuvJtM342E7p2nEpwTGbDw and https://www.youtube.com/channel/UCssIc2lLpX1nIHkymAzEptw are two of my favourites.