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7.1 What are Voxels?
From 3D-Coat Wiki
All usual sculpting programs operate with the surface of the object. Voxel sculpting operates over volume and allows you to sculpt without any topological constraints and make complex details from nothing. You can change topology as you wish. This approach gives you an absolute feeling of freedom in sculpting. It is not based on surface deformation but on volume building and filling. You can feel like a true artist here, don’t think about polygons and structure, just express yourself as an artist! The picture above illustrates the very important visual and technical difference between surface and voxel sculpting.
But of course you should know some limitations of this technology – surface can’t be too thin in voxel representation. If you want to make too thin surface you should increase resolution of scene or use the newly introduced in v3.1 “Surface mode” for voxels. This can be done by clicking on the cube icon next the the particular layer you would like to work the surface of, and it will change to a wavy line. The wavy line represents this new “Surface mode”.
So what are these voxels anyway? They are values [0..1] placed in a cubic grid. The surface is placed on the isosurface where value is equal 0.5. This picture illustrates how voxel sculpting works:
Simply put: Voxels are points in 3D space that contain information on volume and color.
This unique method of sculpting voxels is akin to traditional clay sculpting. If you need to sculpt on an ear, simply start sculpting the ear. Same thing goes with arms, or legs, or anything else for that matter. If you need it, sculpt it.
