Here's another video of her running a g-code file created from a file intended for a laser etching machine that makes cutting dies I use in the day job. It's an evil file and would not work with plasma due to the kerf width but it's a great test job.
http://www.davekearley.co.uk/LinkPics/CNCVID2.mp4

The image shown has been overdrawn two or three times already and shows zero step error or loss. The more I play with it the more impressed I am.

This was also shot before I fixed the CV issue I had spotted today that's why it seems a little jerky.

I'm work-hardening the electronics now, until that's done I dare not light the torch near it, bound to bugger something up ;)