I am not only a huge fan of Arduino, but if you have ever visited this site before you will know I am a big fan of 3D printing as well. When I heard that Arduino was developing it's own sub $1000 3D printer that is modular, open, and available as a kit I was pretty excited. The Materia 101 is designed for beginners, makers, and enthusiasts alike which means that it could end up as the standard for many hobbyists.
The CreatorBot is the first affordable Two Color commercial, there are many 3D printers on Kickstarter but this one is one of the more interesting machines. I am looking forward to seeing printers of this quality out on the market. You can see more of it on their page.
3D Printing is one of the coolest new technologies being developed right now. It is moving at a fast rate and there are some really interesting new designs coming out like the Titan 1. The Titan 1 is currently on Kickstarter and looks to be the fastest, tallest, and best quality print out there right now. You can check it out on kickstarter. Up to 2.7 inches per hour print time, 9.5 inches tall print size, and min 37 micron XY resolution - enabled by Patent-Pending PSP Tech. Compared with Stereolithography (SLA) competitors, Titan 1 is at least 2 times faster and has the largest printing size.
The first truly consumer 3D printer should be incredibly intuitive, easy to own, and seamless by design. This project has already beat it's goal of $50,000 by $1,550,000. If that doesn't show you how excited people are for 3D printing then I don't know what will. This project, the Micro 3D is a small, cheap, consumer 3D printer that is aiming to be on the market by August 2014. This is shaking up the world of 3D printing because traditionally you are looking at over $1000 for a 3D printer. These guys want to sell them for less than $500.