Free tools for moving the axis of 3D models include Blender, MeshLab, and Tinkercad—each with user-friendly or precise options.
Blender (open-source) uses "Set Origin" or the 3D Cursor to reposition axes; MeshLab (mesh-focused) adjusts axis alignment for imported models; Tinkercad (beginner-friendly) lets you move axes via drag-and-snap controls.
New users should try Tinkercad’s simple interface first; for precise edits, Blender’s Object Properties > Transform panel helps adjust axes accurately.