Thanks for the suggestions My intention was for the beam to be a solid, non-flexible beam, that could take the load from the hull and not flex. Using many sheets of paper glued together with a non flexing glue seems to work. But I haven't decided how to finalise the design yet. I flirt from one component of the model to the next when I get bored or frustrated. The glue is a non brand name acetone/toluene base craft glue which seems to suit my purposes. Dan, I could try using card laminations in opposing directions (good idea), but the paper laminations seem to be holding up so I'll stay with that until everything falls apart. Yes zathros, it would make a good working model, though paper and card isn't quite strong enough.