Zeeland’s StrikoDynarad last week readied a 70-ton aluminum furnace for shipment. For some perspective, that’s 140,000 pounds — heavier than a U.S. Army M1 Abrams Tank and about the top weight of a North Atlantic right whale. StrikoDynarad specializes in devices that melt and handle molten aluminum. But this was a special project. “It’s the biggest we’ve built so far,” said Martain Reeves, managing director…