The insulin syringe with magnified sheath is a syringe with a transparent outer sleeve constructed of a material capable of magnifying printed information. The laser input emits a beam of light that is oriented substantially orthogonally to the flow of blood cells through the flow cell such that laser light impinges upon the blood cells as they pass through the flow cell. Thus, the Cu layer on the substrate surface can be removed uniformly, and the Cu wiring portions formed in the wiring grooves can be planarly and uniformly polished without giving rise to problems of over-polishing such as dishing or erosion. The method also includes balancing various ligament tensions to obtain desired tension and moving a femoral component of a total knee implant through the primary incision.