Protolabs, 3D-Print Metal Fabricator, Up on Output-Platform Deal Protolabs, a 3D-printing metal fabricator, agreed to pay as much as $330 million for 3D Hubs, an online manufacturing platform Author: Protolabs ( PRLB) - Get Report jumped Tuesday after the 3D-printing metal fabricator said it definitively agreed to buy 3D Hubs, the Amsterdam online manufacturing platform, for as much as $330 million. The Maple Plain, Minn., company said in a statement it would pay $130 million cash and $150 million of stock for 3D Hubs. Protolabs will pay as much as an additional $50 million, half in cash...