Well I do not care to do that on a tablet or on a screen, with or without keyboard ... but having smat tools to help to quickly draw freehand curves in a 3d space, that's really impressive.

I did't take care of the file, I have believed that was just an image :)
I suppose that is a Maya file format?
What free prog can convert that? (just for know it)

Yes it's maya native ascii format ... I don't know it there is any free tool to convert .ma file.

Wow, I sketch on my tablet laptop (aka, my screen is a wacom tablet) and this would be a great interface idea, though I suspect that the usual need for precision for most of my applications would limit this interface to early conceptual phases only... any thoughts on precision CAD productivity issues with this style of interface??

Adam.

WOW! This looks interesting. Did you try to design a phone or a remote with buttons?

-Dooki

My personnal try! :)
It's not so easy! (I understand now why PaQ has not continued :)
The game is of course to keep all the lines without add some one ;)
Sweep, Network and the export to ketchup ;)