can someone tell me how the best or easiest way to change the orgin point to the oppsite side of the part as if you have a 1/st and 2/nd op. and you want zero at the oppsite end for 2/nd op. thanks iam new at this mastercam just learning what going on is iam bringing in a cad model from another company and trying to reset there zero orgin to the oppisite end could i have a step by step method of doing this thanks.