A brush assembly is formed from a single metallic foil positioned within a base
portion. The foil is folded or rolled up into a plurality of closely spaced foil
layers soldered to the base portion of the brush assembly. Attachment of the folded
foil to the brush base portion involves use of barrier tape and/or adhesive on
the folded side of the foil layers and soldering of one layer edge to the base
portion which is received within a holder to position the folded foil in brushing
contact along the other layer edges with a running surface under a spring bias
pressure. The brush may be constructed by metal fiber braids placed on or between
metal skins to form a hybrid structure. The brush assembly may be applicable to
slip ring current collectors or other electric contact applications, including
cleansing brush applications involving other types of brushes.