Disclosed herein is a method for creating a casted form of a residual limb, having a very smooth internal surface and a precisely capturing and reflecting the detailed topology of the limb. The cast can be used to create a faithfully accurate positive replica of the residual limb, which in turn can be used to create a comfortable prosthetic socket that, when used for a weight-bearing limb, evenly distributes the weight on all weight-bearing surfaces of the limb.