dvandom

I'll be astonished if Lego proper ever comes up with a CAD solution that rivals LDraw.org (https://addons.mozilla.org/extensions/moreinfo.php?application=firefox&category=Editing%20and%20Forms&numpg=10&id=128)'s toolset and, more importantly, piece selection. I've not kept up on it for a while, but they take it very, very seriously. Of course, the major downside is the usual dearth of Mac-based resources....