Page 4 - 3-D Printers - 21st Century Inventions
P. 4

Chapter 2





                                 How It Works









                              All 3-D printers build



                              objects one layer at a



                              time. Computer programs



                              tell them how to make



                              each layer.


















             8





          ABD_INVT_3DP_FPGS.indd   8                                                                  4/27/18   12:51 PM
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