Page 106 - Robot Builder's Bonanza
P. 106

THE WOODCUTTER’S ART    75


                   No wheel well           With wheel well




                                                            2nd cut




                                                                       3rd cut



                                                                                     Starter hole
                                                            1st cut






                                                            Figure 7-7  The basic wheel well is
           Figure 7-6  Wheel well cutouts allow the robot to have a   created by marking a rectangle into the base
           slimmer profile for any given size of base. The wheels fit into the   and cutting as shown. Drill a hole to insert
           cutouts, rather than jut out to the sides.       the jigsaw blade.



                     1.  Cut in only as deep as you want to make the  wheel— an inch or two is usually enough.
                     2.  Use a 1/4″ bit and drill a hole at one of the inside corners of the well. Position the hole
                        so that it’s on the inside of the well; that way you won’t have the remnants of the hole
                        after the well has been cut out.
                     3.  If using a jigsaw, insert the blade into the hole and cut  toward the opposite end of the
                        well. If using a coping saw, remove one end of the blade from the saw frame and pass
                        the blade through the wood. Reattach the blade to the frame and begin cutting.
                     Figure 7-8 shows another technique that’s ideal when using only hand tools.










                   2nd cut
                         Wheel                 4th cut   Finished
                         cutout  3rd cut                  cutout
                         area
                   1st cut
                                                                  Figure 7-8  A wheel well can be
                                                                  cut using only hand tools, such as a
                                                                  coping saw. Begin with two parallel
                                                                  cuts for the side of the well. The
                                                                  coping saw blade is fine enough to
                                                                  make tight turns.









 07-chapter-7.indd   75                                                                     4/21/11   11:44 AM
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