This is a guest post by Joris Peels, the Community Manager of i.materialise, a 3D printing service for designers, inventors and consumers. They are part of Materialise, a company with over 20 years experience in 3D printing and the market leader in 3D printing services and software. Making predictions is a sure fire path towards getting ridiculed. But, I?ll be brave and go right ahead and make 11 predictions for 3D printing in 2011. Makerbot will sell more than 10,000 3D printers in 2011. To put that in perspective, there are approximately 30,000 3D printers in the world today. Makerbot would have to scale to meet this kind of production but given their strong brand and loyal following it should, together with some prime time TV coverage, be possible. Bre Pettis will appear on the cover of Bloomberg Businessweek magazine in 2011. Bre Pettis is the congenial Maker in Chief of Makerbot. Possibly he will be holding a Makerbot. And for all you Kevin Rose watchers out there, this will not be the beginning of the end.