Cheap precision in a small space
I bought cheap Delta machines. In my 12 x 20 foot shop there was no room for better, even if I could afford them. With the application of time, digital angle gauges, shims, a dial indicator and more time, my low-ball collection is producing perpendicular cuts without tool marks. These machines are cheap because the builders are only making the rough cuts on the castings. That's good enough for plus or minus an eighth of an inch and almost-correct angles. My fooling around approximated the finish cuts that, had they been done at the factory, would have put these machines out of reach. Now I am getting less than .020" repeatability. The secret weapons are heavy stone slabs left over from countertop installations. Adhesive backed sandpaper on their dead-flat surfaces gives you a wonderful sander with which to lap the warp out of the aluminum work surfaces. There's more to know, should you need the information.