[Fab] Open-source, cross-platform topological modelling software

[poppy]

http://code.google.com/p/topmod/

it's pretty minimal, which makes it easy to figure out and fun pretty 
damn quickly.

There even appears to be functionality for planarity which I am assuming 
will aid in ensuring manifold-ness and printer happiness. I still 
haven't tested that part yet...

EXTRUSIONS!

anyway, thought I'd mention it.

Also, thanks for all the help last wednesday everyone, sorry if i bugged 
y'all too much.

+ p