Method for surface finishing of difficult polish surfaces

Abrading – Abrading process – Tumbling

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451330, 134 7, B24B 3106

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055076858

ABSTRACT:
A method for finishing a surface of a workpiece, having the steps of agitating the workpiece with a first mixture including a first plurality of discrete, homogeneous compressed felt chunks having a first particulate abrasive coating thereon, and then agitating the workpiece with a second mixture including a second plurality of discrete, homogeneous compressed felt chunks having a second particulate abrasive coating thereon with an abrasive size smaller than an abrasive size of the first particulate abrasive coating.

REFERENCES:
patent: 1352598 (1920-09-01), Hart
patent: 2185262 (1940-01-01), Lupo, Jr.
patent: 2440656 (1948-04-01), Huntington
patent: 2545291 (1951-03-01), Lupo
patent: 3453782 (1969-07-01), Hageluken et al.
patent: 3504124 (1970-03-01), Kittredge et al.
patent: 5140783 (1992-08-01), Hoffman
Davidson, "Developing quality surfaces with dry process mass finishing", The Fabricator, Dec. 1988, (4 pages).

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