Another long one, sorry guys - but this is the complete video of how to warp your model to be Section-Oblique. I know this stage of the tutorials got a little crazy, so I'll send out a PDF including step-by-step operations for making all the moves in Rhinoceros 3D once you have your model imported into Rhinoceros 3D from Sketchup.
00:20 - Importing your OBJ file into Rhino
01:00 - Orienting your model
4:30 - Drawing a box around your work, Grouping
08:10 - Scale Factors
08:50 - The magic Scale Factor number - "0.7075"! (When working in meters)
10:40 - The shear commands
16:21 - "Make2D" - turning your model into CAD lines
17:33 - Exporting those lines into AutoCAD (as a .dwg!)
18:42 (and on) - Drawing your section cut line in AutoCAD, cleaning up your work