A digital short introducing the 2014 Silver Spring-Takoma Thunderbolts Outfielders of the Cal Ripken Collegiate Baseball League
Plans for this machine are available on ebay.
https://shop.ebay.com/momus_design/m.html?_trksid=p4340.l2562
Unique fully enclosed benchtop CNC router design. Designed to be fast, accurate, and inexpensive to build. The enclosure is designed as part of the machine frame, which adds to its strength and rigidity. Capable of rapid speeds of over 500ipm, and cuts wood at over 200ipm. Has about a 16″ x 16″ cutting area. It is belt driven on the X and Y axes, with an acme leadscrew on the Z axis. It is powered by 276 oz/in stepper motors, with a Xylotex drive.
Here it is milling aluminum. It is cutting 3/16″ thick 6061-T6 aluminum plate with a 1/4″ end mill, using a laminate trimmer as a spindle. The machine is robust enough to accurately mill aluminum with no chatter or vibrations. Accuracy is dead on, with each successive pass lining up exactly with the previous one. No lost steps, no backlash, just effortless cutting of aluminum parts.