we've got 3-d printers on the optimized to use a renewable biopalacic, and then we've got the 2x which two tools empower people to make things, and it works by building up layers of plastic until your model is done, and then you take it out of the makerbot and you have something. >> host: and this printer over here is actually working right now, correct? >> guest: right. so it's just finished its 3-d model, and it's cooling down. this is the makerbot replicator 2x, and it's a two-color 3-d printer. it makes things in multiple colors. so you've got red and black there, and it's a wonderful piece of machinery for anybody who's creative. >> host: is printer a misnomer? >> guest: you know, i think it's actually, it's a little confusing to people, but a 3-d printer actually works very similarly to a 2-d printer. with a 3-d printer -- 2-d printer you take a virtual document and you make it a physical printer. with 3-d you take a virtual model on your screen and make it a physical model. thai been using this type of technology on a mainframe size and now they have access to it, and they can j