When I started the project, I had a small manual mill and lathe. This escalated to a CNC mill, then a larger lathe, at each step the parts I would attempt would get more complicated. I ended up with two Deckel FPNC toolroom mills, considered to be the finest examples of that class of machinery in the world. They have positioning accuracy to 40 millionths in three axis. I now also have electronic probing and tool setting. Manufacturing is in such shambles you can pick these machines up for virtually scrap prices. For a long time I didn't have a CNC lathe, but I have recently rectified that deficiency . I am a hack machinist, but very good with computers, to some extent using CAD/CAM and CNC equipment, machining has become a computer problem!