Hi CncCumberland,
Yes, the SVG file format does not support Z coordinates for paths, but when we include the generation of DXF files for exporting paths-layers and toolpaths we should be able to include the Z coordinate in there, at least for toolpaths.
You have my curiosity piqued. What are you hoping to do with an exported 3D toolpath? I'm wondering if we can't get it done by exporting G-code too. :]
- Charlie