Medical devices, tools and implantable items are used for highly sensitive procedures, and therefore must be expertly finished before they are utilized. Burrs on a cutting implement can break off inside a patient, an implantable device can corrode inside the body and a critical mechanical device can seize up and jam when it's needed the most. To avoid the bodily harm that can result from improperly finished parts, medical device electropolishing is becoming increasingly popular. What does this process do, though, that makes it suitable for such important tools and devices?