Rotten stone

Rotten stone

Rotten stone, sometimes spelled as one word, and also known as tripoli, is fine powdered rock used as a polishing abrasive in woodworking. It is usually weathered limestone mixed with diatomaceous, amorphous, or crystalline silica. It has similar applications to pumice, but it is generally sold as a finer powder and used for a more glossy polish after an initial treatment with coarser pumice powder.

It is usually mixed with oil, sometimes water, and rubbed on the surface of varnished or lacquered wood with a felt pad or cloth. Rotten stone is sometimes used to buff stains out of wood. Some polishing waxes contain powdered rotten stone in a paste substrate. For larger polishing jobs, rotten stone mixed with a binder is applied to polishing wheels.

It has also been used to polish brass, such as that found on military uniforms, as well as steel and other metals. Plates used in daguerreotypes were polished using rotten stone, the finest abrasive available at the time.

ee also

* Metal polishing
* Wood finishing


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  • Rotten stone — Rotten Rot ten, a. [Icel. rotinn; akin to Sw. rutten, Dan. radden. See {Rot}.] Having rotted; putrid; decayed; as, a rotten apple; rotten meat. Hence: (a) Offensive to the smell; fetid; disgusting. [1913 Webster] You common cry of curs! whose… …   The Collaborative International Dictionary of English

  • rotten-stone — …   Useful english dictionary

  • Rotten — Rot ten, a. [Icel. rotinn; akin to Sw. rutten, Dan. radden. See {Rot}.] Having rotted; putrid; decayed; as, a rotten apple; rotten meat. Hence: (a) Offensive to the smell; fetid; disgusting. [1913 Webster] You common cry of curs! whose breath I… …   The Collaborative International Dictionary of English

  • Rotten borough — Rotten Rot ten, a. [Icel. rotinn; akin to Sw. rutten, Dan. radden. See {Rot}.] Having rotted; putrid; decayed; as, a rotten apple; rotten meat. Hence: (a) Offensive to the smell; fetid; disgusting. [1913 Webster] You common cry of curs! whose… …   The Collaborative International Dictionary of English

  • rotten — adj. (rottener, rottenest) 1 rotting or rotted; falling to pieces or liable to break or tear from age or use. 2 morally, socially, or politically corrupt. 3 sl. a disagreeable, unpleasant (had a rotten time). b (of a plan etc.) ill advised,… …   Useful english dictionary

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  • Rotten Apple — Pour les articles homonymes, voir Rotten. Rotten Apple Album par Lloyd Banks Sortie 10 octobre 2006 Enregistrement …   Wikipédia en Français

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  • Stone, tonsil — A tiny stone (calculus) in the tonsils. These stones, called tonsilloliths, are found within little pockets (crypts) in the tonsils that typically form in chronic recurrent tonsillitis and harbor bacteria. The stones are foul smelling. They tend… …   Medical dictionary

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