1) Grab the Sketchup file from the Files and Drawings tab of OpenBuilds Sphinx 55 (20" x 20") 2) Open it in Sketchup Make Downloading older versions | SketchUp Help 3) Grab the plate - manipulate out the face, and rotate it so its flat on the XY plane 4) Select and export the plate to DXF: Convert Sketchup SKP files to DXF or STL | guitar-list plugin does a great job
