Before running the solver on this drawing, it is important to turn off the point-merging functionality of the SOLVE command. Remember that by default the solver will merge any two points that fall within the PD_RESOLVE_MERGE_TOLERANCE distance of one another. Normally this is desirable, as it helps to keep the drawing clean. In this case however, it is possible for the endpoint of the follower profile to come into contact with the endpoint of the cam profile as the cam rotates. Were this to occur, these two points would be merged, and further parametric manipulation of this drawing would be impossible. To keep this from happening, type in: pd_resolve_merge_tolerance -1 at the command line.

Now, select SOLVE NoKeep to generate the initial variation.

To confirm that the follower will indeed maintain contact with the cam as it rotates, go to MENU 1 and enter several different values for the Rotation parameter, solving after each one.