Let me explain: About a year ago I was planning to build a CNC router of my own design. I started gathering components including the THK linear rails. I soon found out you pretty much need a CNC to build a CNC and this is when I decided to build my Sphinx machine. I've had these rails and some other parts sitting around so it's time I used them! I'm planning to incorporate linear rails and 1605 ballscrews into the Sphinx design. I really like the overall appearance of the Sphinx.