The present disclosure describes a scrubber system for removing material from, or smoothing the surface of, an object. According to an example embodiment, the scrubber system comprises one or more scrubbing disks, spacer disks, and retaining collars configured for interlocking with other cooperatively configured scrubbing disks and spacer disks. The scrubbing and spacer disks are arrangeable end-to-end along a shaft extending therethrough and between opposed retaining collars to form a scrubber custom-configured for a particular application. The scrubbing disks may include one or more types arranged, with or without any spacer disks, in any desired configuration. When the scrubbing disks and/or spacer disks are positioned adjacent one another end-to-end, lateral and end mating surfaces at the adjacent ends of the respective scrubbing and/or spacer disks abut one another, limiting relative rotation therebetween and substantially forming a single, contiguous outer surface that prevents removed material from becoming lodged therebetween.