Uhh I don't see why you would want to do that but, just delete the faces (flat sides) then select the two borders you've created by doing so and press 'cap'. That should create a face that links to every vertex of the border. (note, two borders give two faces so don't worry)

If you have problems just send them to me.

I just said why I need to do that. The edges are open and tool will not let the model pass into halo until they are sealed.

Can you take care of this for me? I've already sent you the model previously. My current schedule is too hectic to this right now. But I should be able to do some hardcore bsp production and a few surprises I have in store.

Uhh did I get this weapon in particular?

And btw, weapons can have open edges. Bsps and Scenery cannot. Just look at the standard halo weapon .gbxmodels they've got so many open edges it's actually quite insane.

Yes, I believe you did. I sent you them because my gbximporter was having problems importing them for some stupid reason and you performed a direct .3ds conversion for me.

And obviously I know weapons can have open edges, Maarten, I am not retarded. With this particular model (longsword) it was done incorrectly according to tool.exe. And the hole in the center doesn't really look all that attractive anyways.