I understand a heated build chamber is really required when printing ABS - especially for larger builds?
Considering the patent for a heated build chamber is held by Stratasys, meaning no other company is able to implement this on their design (not to place on sale anyway) it means Ultimaker are unable to implement a heated build chamber.
However, now that Stratasys has taken over MakerBot, we are certainly looking at a new Replicator design somewhere down the line with a heated build chamber - perfect for ABS prints.
Does this now give Makerbot a huge advantage? I mean, Makerbot now has access to several patents owned by Stratasys that no other 3D printer manufacturer has access to. This in itself could be big.
Or course, you are free to create your own heated chamber designs, as many have, but for personal use only - not for resale. Its a patent that is so generic that it should never have been granted for one particular manufacturer, in my opinion. It limits competition which isn't great for consumers.
I wonder what Makerbot will be coming up with in the near future.......