A sculptured drum for a retread process, comprising: an inner radial section that has a central axis, wherein the central axis extends in an axial direction; a drum outer surface; a plurality of support members that extend outward from the drum outer surface in a radial direction of the sculptured drum, wherein the support members are located outward from the inner radial section in the radial direction; wherein a tread that has a plurality of grooves (26, 52, 54, 74) is supported by the sculptured drum during a brushing process, wherein the tread passes across the sculptured drum such that some but not all of the grooves (26, 52, 54, 74) have one of the support members disposed therein, characterized in that the support members when disposed within the grooves (26, 52, 54, 74) do not completely fill the grooves (26, 52, 54, 74), wherein the support members when disposed within the grooves (26, 52, 54, 74) engage a lower surface of the tread, wherein the tread has a plurality of tread blocks that have tread block outer surfaces and tread block walls, wherein the grooves (26, 52, 54, 74) into which the support members are disposed are defined by the lower surface of the tread and the tread block walls, wherein the support members when disposed within the grooves (26, 52, 54, 74) do not engage the tread block walls, wherein the tread has a machine direction that is the direction the tread is passed across the sculptured drum, wherein the tread has a longitudinal direction that extends in the machine direction, wherein the tread has a lateral direction that extends along a width of the tread, wherein the tread has a vertical direction, wherein the grooves (26, 52, 54, 74) into which the support members are disposed have at least one end in the lateral direction that is open, wherein the inner radial section, the drum outer surface, and the plurality of support members are arranged into a first component and a second component that are separate from one another, wherein the distance from the first component to the second component is adjustable in the axial direction. an inner radial section that has a central axis, wherein the central axis extends in an axial direction; a drum outer surface; a plurality of support members that extend outward from the drum outer surface in a radial direction of the sculptured drum, wherein the support members are located outward from the inner radial section in the radial direction; wherein a tread that has a plurality of grooves (26, 52, 54, 74) is supported by the sculptured drum during a brushing process, wherein the tread passes across the sculptured drum such that some but not all of the grooves (26, 52, 54, 74) have one of the support members disposed therein, characterized in that the support members when disposed within the grooves (26, 52, 54, 74) do not completely fill the grooves (26, 52, 54, 74), wherein the support members when disposed within the grooves (26, 52, 54, 74) engage a lower surface of the tread, wherein the tread has a plurality of tread blocks that have tread block outer surfaces and tread block walls, wherein the grooves (26, 52, 54, 74) into which the support members are disposed are defined by the lower surface of the tread and the tread block walls, wherein the support members when disposed within the grooves (26, 52, 54, 74) do not engage the tread block walls, wherein the tread has a machine direction that is the direction the tread is passed across the sculptured drum, wherein the tread has a longitudinal direction that extends in the machine direction, wherein the tread has a lateral direction that extends along a width of the tread, wherein the tread has a vertical direction, wherein the grooves (26, 52, 54, 74) into which the support members are disposed have at least one end in the lateral direction that is open, wherein the inner radial section, the drum outer surface, and the plurality of support members are arranged into a first component and a second component that are separate from one another, wherein the distance from the first component to the second component is adjustable in the axial direction.