Fig. 4From: On the optimization of low-cost FDM 3D printers for accurate replication of patient-specific abdominal aortic aneurysm geometryThe infill density changes the sample transparency. The 100% infill density displays better transparency than the 0% infill density. The 20 and 50% infill densities have partial layer fill, clouding the transparency. With 100% infill the sample is has no air gaps; thus, no clouding of optical properties appearsBack to article page