lexmark 3d printer is back

I've upload a video of the lexmark 3d printer project.
it's working nice, now I need to find out what binder to fill the
printer cartridge with it.
there is not enough water being eject to satured the plaster, any
way , I think the trick is to load some kind of glue on the printer
cartridge just to hold the plaster particles togheter.
Or better yet, mix some kind of glue powder with the plaster and use
just plain water in the cartridge.
Check it out http://www.youtube.com/watch?v=ApVmWkH2tuw