mechanical engineering design project ideas 3d models

I don't like very much flying saucer designs, but I really enjoyed the show. The bottom part may require support. <br> The file's names explained: <i>name_1_x_10_y.stl</i> is 1 : x * 10^y. So _1_6_10_7 is 1:600000000 or one in 60...