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Nebraska, with 600 middle school students from omaha and we are about 35 minutes away from totality. we've had our morning full of science activities and demonstrations. >> shepard: what kind of science activities? >> we've been exploring how gravity works. we've done scale models of the solar system to show how incredibly vast our solar system is, the incredible distances between the planets and their sizes. we look through telescopes, we have some special solar telescopes that have filters on them. we've had some incredible images of the sun. >> shepard: it's a great excuse integrate visual ...

Tell me a little bit about the economics of it. to buy a maker bot or to put something on shapeways versus going and manufacturing it yourself the traditional way. >> it really depends on type of product, the volumes, the size, the complexity. typically, if it's relatively low volumes and very complex, then that's when there's a good match. and also relatively small. they don't do well with big parts because they take so much longer. you can do big parts by getting the expensive machines and assembling. but it really is on a case by case basis. for prototype, especially for scale models, but w...

Going and manufacturing it yourself the traditional way. >> it really depends on type of product, the volumes, the size, the complexity. typically, if it's relatively low volumes and very complex, then that's when there's a good match. and also relatively small. they don't do well with big parts because they take so much longer. you can do big parts by getting the expensive machines and assembling. but it really is on a case by case basis. for prototype, especially for scale models, but when you go into production with these types of machines, you really have to carefully evaluate the type of ...

Going and manufacturing it yourself the traditional way. >> it depends on the type of product, volumes, size, complexity. if it's relatively low volumes and very complex, then that's when there's a good match. and also relatively small. they toent do well with big parts because it takes so much longer. you can do big parts by getting the expensive machines and assembling, but prototyping across the board, especially for scale models. but when you go into production with these types of machines you have to carefully evaluate the type of product, volumes. >> how much does a maker bot cost? >> it...