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Chapter 7 / The Gantry and X-axis



                                                                          Figure 7.2
                                                                          Gantry feet with
                                                                          uprights.



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               •





                                          :























         The uprights are 2 X 6 steel cut 20.5 inches long and the span-
         ning beams are 2 X 4 steel, 48 inches long to span the distance
         between the two upright posts attached to the gantry feet. These
         spanning beams are depicted in Figure 7.3 .

                                                                          Figure 7.3
               , .   Ai   :;4_ Pi                                         Spanning beams.

                                                   "'  11  j  I

                                                                    .
                                          $$
                                                                    M





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