There are many 3D printers available on the market. Not all of them are portable, nor every model lets you print with multiple materials. The Focus printer is different. It is an ultra-portable 3D printer with exchangeable extruders, so you can print PLA, ABS, wood, bio-rubber, nylon, bronze, and even editable materials.
Th 3D printer has a high quality aluminum and stainless steel construction. It lets you make an extruder switch easily. The printer has a stationary, heated, and isolated print-bed and does not need calibration. You can find out more about it on Kickstarter.