It is tough to plow traces for Intel chips (SANDYBRIDGE) , it need layout tool to support arc snake plow. How to do arc snake in Expeditionpcb?. Currently, Cadence Allegro have a special command(16.3 from 2010.8) to support this type of plow, it seems that Cadence have a hard-code special plow to this type of plow. the arc snake plow see the attached picture
Yanfeng