The Gecko G540 and Ethernet Smoothstepper are all wired up and Mach 3 is configured. The first cuts with the new setup were a huge improvement. I ran a relief carve that I had done with UGS before.
The roughing pass with UGS took: 1:14:41 and with Mach3: 50:29
The finishing pass with UGS took: 1:54:05 and with Mach3: 1:21:16
The only change I made was to use the Mach3 Post Processor. I still need to tweak the settings a bit, but I am happy with how it is running. It also separated the Y-Axis motors so they each have their own driver, and the rotary axis is setup properly. I am very pleased so far.
I didn't like the Mach3 screens, so I have been changing one around to suit my work better. Here is the new enclosure all wired with Mach3 on the monitor, and the first carve still on the machine right after it finished cutting. The carving is about 3" x 6" and the horse in the foreground is about 0.65" deep, so it is a fairly deep relief carving.