Scroll down to the bottom of the link page.
Y'know ... a total hash-out of unconverted 3.0e into 3.5e stuff "should" happen but probably won't.
So with this, the AC is a +3 (or +5) weapon, and you Craft(sculpt) it; and then it's wielded like a normal weapon.
Perhaps a Meta(poly)morph to make it a different "object" than it already is.
As in, not a shaped (ac) object-sword, but a sword-sword.