ABSTRACT
Knot or Twisted Tuft construction method is the most desirable for heavy, aggressive, high-impact application work because the straight wires are twisted together in small cable-formed tufts. A substantial portion of the applications requiring very fine finishes of 4 to 32 rms simply cannot be accomplished with wire filled brushes. The use of tampico fiber brush tools with cutting and polishing compounds has diminished in recent years, with many industrial applications replaced by the abrasive monofilament products. Polishing is a primary mechanical finishing operation that uses selective abrasive grit minerals brought to and held against the work by semiflexible support systems, such as endless abrasive belts, abrasive flap wheels, and soft flexible grinding wheels. Buffing is also a primary mechanical finishing operation using cloth or natural fiber as backing and holding materials for the sized abrasive grit minerals held together by an assortment of liquid or solid binders.
