Tell us about yourself!
Sure, go ahead.
I have converted the AxiDraw plugin for Inkscape so that it works with 4xiDraw.This means that you can draw directly from Inkscape without having to save G-code and start another program.Get it from https://github.com/bullestock/4xidraw
That sounds like you are trying to export the 3D view. Make sure to set assemble = false to generate the 2D view.
The dimensions are defined in pivotbox.scad.
Sorry, I don't understand. The dimensions of the connectors are the same regardless of the material thickness.You simply edit pivotbox.scad, then open pivotbox_rods.scad to generate the connectors.
Yes, that is as I suspected. You can manually edit the SVG file, or simply install an OpenSCAD snapshot: http://www.openscad.org/downloads.html#snapshots
Which version of OpenSCAD are you using? Older versions do not correctly set scaling information in SVG files.
When you say "the connectors look like they're made for 2mm thickness", what do you mean?If you want a 30 x 15 cm box, just set w = 150 and h = 150.
I have made a parametric version of this in OpenSCAD: https://github.com/bullestock/lasercut-box-openscad/blob/master/examples/pivotbox.sh