Hey sorry for the late response. The new design files are not at github yet. I will upload them soon. I am also working on a better documentation. I tried to print with the first prototype. One of the problems was to get the prints stick to the build platform. You can find pictures of print tests in some build logs ( here at hackaday). The quality looks good, for a first prototype.

I just refactored the whole firmware and the software tools. The new firmware supports g-code now.

Looks great! Are the design files in github somewhere? And have you tried printing with it yet?