i've been viewing these forums for a good while now, and have had a go at designing my own CNC miller. its only a small one (around 12" x 12" with about 3" of z travel) but its mainly a practice build so i can get a better understanding of how to build one.
it will be made out of mild steel, a combination of 12mm and 25mm plate, and the base is constructed primarily of 50mm box section.
i am using ground rails as they are cheaper and because of the small machining area was hoping this would be sufficient? i originally wanted linear rails but wanted to make this as cheap as possible. the ballscrews are precision rolled C5.
please let me know what you think. i am only planning on cutting plastics and maybe some aluminium if possible.