What grind did the original Chinese Dao have?

[S2nd]

Does anyone happen to know? Unfortunately, all I can find are cheap tinfoil swords or "reproductions," and I'd like to build a small scale model for a friend.

Thanks

 

[knife saber]

Are you talking about flat vs. convex vs. hollow? Or more general proportions of the blade itself? Here's an image of an old piece: http://therionarms.com/sold/ttoy330.html

Also, SwordForumUniversity has a good writeup on some historical pieces: http://swordforum.com/sfu/chinese/

Most other notable sword cultures seem to have developed the convex edge rather promptly; I would imagine the Chinese to be no different. Of course, I could be wrong.

Hope this helps!

 

[S2nd]

Yee-eeee-es! That picture definitely looks like a convex edge (that part was giving me the most trouble). Thanks Knife Saber!