If you look, there's an excellent paper on an academic team that did a low cost construction project on a small mill for micromachining. They achieved very hig

If you look, there's an excellent paper on an academic team that did a low cost construction project on a small mill for micromachining. They achieved very high accuracy with fairly ordinary components. Here's one link to the project: https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=3&cad=rja&uact=8&ved=2ahUKEwivooDh3dLjAhUXLs0KHR7gD48QFjACegQIARAC&url=https%3A%2F%2Fpeer.asee.org%2Flow-cost-micromachining-development-and-application-for-engineering-and-technology-education.pdf&usg=AOvVaw3WvJzVKOiMUBBtQM3JRaYV https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&c...