Last week, we wrote about the Olsson Block, the customer-invented product that Ultimaker has been giving away for free with the purchase of Ultimaker 2 and Ultimaker 2 Extended printers. The block, which enables the user to change hot end nozzles without replacing the entire heating block, has caught on quickly within the industry. Recently, it made a huge project much easier for architectural firm Sweco. Read more at 3DPrint.com: http://3dprint.com/105094/olsson-block-sweco/