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So I ended up using a few more open source programs with my patent drawings. I needed to add some cross hatch to the drawings which I couldn’t get to look right in sketchup. I was pleasantly surprised by the section tool, but I still needed to do some manual adjusting. So I exported to 2D (I changed the size to be about double) then I fired up the GIMP and brought in my drawing. I then created a hatch pattern, basically created a 20 x 20 pixel image with a line across it and then saved it as .pat file. I then moved my .pat file into the pattern directory of the GIMP and then restarted the GIMP (you have to restart to get it to reload the patterns). Then I pattern filled into the places I wanted cross hatched.