This add-on provides tools for smoothing mesh surfaces in Blender's edit mode without the typical volume loss associated with standard smoothing. It includes both an operator for smoothing entire meshes or selections and a dedicated 'Volume Smooth Brush' tool.

The smoothing operator offers three modes: Inflate smoothing for rounded surfaces, Laplacian HC smoothing for speed, and Volume smoothing for the highest quality results. Sharp edges can be used as guiding rails to constrain vertex movement, allowing you to maintain the primary forms and structural integrity of the smoothed object. The smooth brush features geometry sliding capabilities and supports pulling/sliding geometry along the mesh surface. Additional features include X-axis symmetry support, shape-key compatibility, and edge tension methods (Uniform, Proportional to edge length, Inverse to edge length).