problems-of-hand-guided-machiningPossible problems with hand-guided precision work,deburring, and rounding using hard particles on a flexiblecarrier (emery cloth, abrasive paper): BrushingPolishingPolishing felt Iron, bronze, or brass smearing from the bristles: - Corrosion; with iron, rust - Reactions with base material - Separation and/or bonding with coatings - Promotion of hydrogen embrittlement SiC particles with a danger of material damages to hot parts during operation Transfer of foreign material from one part to another: - Corrosion, - Bonding problems in coatings - Burr formation Groove formation Overheating of the work surface - Through the work process - Due to sparksSanding/smoothingPart PartBelt grindingPartWhen smoothing, it seems natural to proceed in a circumferential direction.Grooves can shorten cyclical part life spans. "Butterfly" ABCDEFFor edges thatare not easily accessible