The Border Curve tool lets you easily add a curve to the edge of a mesh, or to the edges of a hole within the mesh.
- Select the Border Curve tool
from the Curve Tools tray, then drag over the mesh edge. Mudbox places a new curve exactly along the mesh edge. Drawing curves on edges can be useful as you draw curves to guide a retopology operation, or as you paint and sculpt near the edges of a mesh.
