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Edge Weight Tool

With the Edge Weight tool, you can add creasing to subdivision surfaces without adding additional geometry. You do this by assigning a weight to various edges. To use the tool, select an edge (or edges). Then click the Edge Weight Tool button in the Vertex Map menu and drag in the 3D Viewport to specify a value. Setting the value to 100% creates a completely hard edge. With a value of 0%, Modo uses the default interpolation of the limit surface through the control vertices. It is possible, with Modo, to set edge weights to negative values to push the limit surface away from the control vertices.

Weight Tool Panel

This tool is actually a special use of the generic Weight tool. Before activating this tool, first select the Subdivision Vertex Map so that Modo adjusts the appropriate Vertex Map.