This is an inkscape extension to try and work with the modela brand of engravers.
Getting better, primarily based on the HPGL plotter output extension included with Inkscape.

You probably want to start with a document that is 600 pixels by 4000 pixels, or at least something with the same aspect ratio like 600 x 400.

Written by Matthew Beckler - [email protected]
Based on code written by Matt Mets:
    http://www.cibomahto.com/2010/06/carving-foam-with-the-roland-modela-mdx-3/