In this video, I show the use of Geomagic Design X Software to reverse engineer a blisk. A blisk is a turbomachine component comprising both rotor disk and blades. It consists of a single part, instead of an assembly of a disk and individual, removable blades. I show how to use the cylindrical method of creating 3D mesh sketches on one of the blades. Multiple radial cross sections are created and used to create a surface loft. Additional surfaces are created then trimmed together to make a solid body. The blade is copy/rotated to make the blisk. The use of 2D mesh sketches are also used to create features.