My Light Machines Corp SpectraLight Mill based on the Sherline 5400. The original SpectraLight controller was non-functional and was replaced with a Gecko Drive G540 4-axis digital step drive and a PC running Mach 3. I finally got the mill working enough to actually start cutting pockets in some plastic. Some more tweaking and then on to some real projects.
![](https://i.ytimg.com/vi/vOUOtTSXOHc/mqdefault.jpg)