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The president weighed in on the design prototypes for the wall of mc. right now there are eight wall prototypes for show and tell. >> you think of a wall as a wall, but honestly you do need some see-through ability. because you don't know -- pure concrete which is a wall, then you can't see whose on the other side. you have a wall that's this thick and can't see whose on the other side. >> cnn's marquel visiting the wall. he brings us this news. >> reporter: president trump says he wanted a big fat beautiful wall. these are his 30 by 30 foot options. >> one of these could stretch 2 to 30 miles...

York. he got some spectacular ideas. wow. but hill says the best part of living a pared-down life is more freedom. as a lifelong do-it-yourselfer, jim knows the power of having an idea and the tools to bring it to life. >> i think when you give everyday people access to the tools of innovation, amazing things can happen. >> this is a fully functional kayak that folds up into a suitcase-sized box. >> it's one of the reasons he founded tech shop. it's an open space innovation workshop where for about 100s it a month, members can use cutting-edge machinery and tools to develop ideas, design proto...