Well, see the side panels on the IC han in carbonite are not the same as the ones in the movies.
There are two different panels also, (if i remember right) on the IC han.
Those can be cast also. Best to cast them in brush on resin then foam.
But they arent very 'clean' very uneaven surface detail. Id have to do a lot of cleaning.
On the bright side, they screw off I think.