[jleslie]

ok, ac3d crashes a lot with vertex->create convex surfaces (I'm using version 6.8.14 on a windows 7 pro x64) meanwhile back onto the first sketchup model when I do the longitudinal baloney slices (make a rectangular cube, then click on the rectangle, then the ship, then object->boolean->intersect) I get the thick slice, but when I then grab the vertexes, and do a vertex->create convex surfaces I only get half the convex surface:

to make sure I grabbed all the vertexes, I grabbed the baloney slice as an object and then switched to vertex control. I can't even imagine why the convex surface split were it did in the second place...