Sorry to interpt in your thread, but I also use Sketchup and have a question, how to you convert a Sketchup file to obj? I use the free version that doesn't let me export to obj file.
This may also apply to Seth's original question but I'm not sure. I haven't done any large poly count transfers from SketchUp to Pepakura. I have a very similar situation in that I am used to older modeling software so Sketchup works well for me. I downloaded an plug-in called "Export to DXF or STL" (
http://www.guitar-list.com/download-software/convert-sketchup-skp-files-dxf-or-stl) for my sketchup and the STL files are usable by Pepakura. (I believe the instructions are there for installing the plug-in for use in SU)
I create an object in sketchup.
select which portion of the model to export (or it will ask if you want the entire model exported)
use the Extension... Tools>Export to DXF or STL
Choose your export units: I use millimeters, as that is what Pepakura uses so it transfers perfectly.
Choose the file type (which should be STL)
save the file ** NOTE! You may have to manually add the extension ".stl" to your filename for Pepakura to read it.
Open the file in Pepakura and assign the orientations.
I was able to measure my wife for some armor in millimeters, transfer it to sketchup (using millitmeters), then export it to Pepakura without changing the scale! It came out perfect.
I did have to unfold it but I think it might be what you are looking for, Phoenix.
Seth, you could try this method and see if it speeds up your load time, but I honestly have not done anything very elaborate.
Good Luck!