Model faster, model faster!!

Got a game of Infinity this Thursday and I'm determined to get a flash piece of terrain ready for it. The scenario revolves around a convoy trying to get to a colony before ambushers can destroy the truck and steal the valuable mcguffin. I've been hammering out this helipad over the past couple of days, hopefully it'll be cut and at least have a basic paintjob for the game!

The helipad surface is 300mm square, so it's kinda big!