Plastic injection molding has revolutionized manufacturing, but appearance issues continue to be one of the biggest headaches for engineers, second only to warpage. These blemishes don’t just affect aesthetics—they can impact part strength, customer trust, and production timelines. In a recent session of Ask the Moldflow Experts, Tim Lankisch, Vice President of Research & Development at CAE Services, shared his deep expertise on how simulation tools like Moldflow can help pre