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- Rock_polishing abstract "Rock polishing is a lapidary process whereby rough stone is polished and smoothed by hand or using simple machines to produce attractive stones. The most common means is tumble polishing, but there is also vibratory finishing.To effectively polish rocks in a tumbler the rocks must all be of the same approximate hardness.Rocks are placed into a tumbling barrel with varying degrees of abrasive grit and or water.Depending on the hardness of the rocks each step in the tumbling process can take place over a number of days.Rocks start out as something called a "tumbling rough", an untreated stone. A tumbling rough is placed into a tumbling barrel with abrasive grit and water. This initial procedure is called the coarse grind. The purpose of the coarse grind is to wear down any sharp or uneven edges on the rock's surface, eventually producing smooth round stones.The second stage of rock polishing is the fine grind. This is the same as the coarse grind differing only in the use of a finer grit and that the stones are no longer shaped but are beginning to be polished. At the end of this step the rocks should appear shiny when wet, but matte when dry.The Pre-polish step uses a mixture of very fine grit and plastic tumbling pellets. At the end of the proses the stones have a slight luster when dry.The final two steps are the polish and in some cases the burnishing. In the polishing step, rock polish is added in place of grit as well as the plastic tumbling pellets. After further tumbling the rocks should now have a shiny look when dry. If this is not the case and the rocks appear to have a film on them, a burnishing may be necessary.In burnishing the rocks are tumbled with only the plastic pellets and the addition of an oil free non abrasive soap.".
- Rock_polishing thumbnail Snowflake_Obsidian441.jpg?width=300.
- Rock_polishing wikiPageID "5245417".
- Rock_polishing wikiPageRevisionID "598158155".
- Rock_polishing auto "yes".
- Rock_polishing date "December 2009".
- Rock_polishing hasPhotoCollection Rock_polishing.
- Rock_polishing subject Category:Hobbies.
- Rock_polishing subject Category:Rocks.
- Rock_polishing type Abstraction100002137.
- Rock_polishing type Act100030358.
- Rock_polishing type Activity100407535.
- Rock_polishing type Avocation100432689.
- Rock_polishing type Diversion100426928.
- Rock_polishing type Event100029378.
- Rock_polishing type Hobbies.
- Rock_polishing type Pastime100431552.
- Rock_polishing type PsychologicalFeature100023100.
- Rock_polishing type YagoPermanentlyLocatedEntity.
- Rock_polishing comment "Rock polishing is a lapidary process whereby rough stone is polished and smoothed by hand or using simple machines to produce attractive stones.".
- Rock_polishing label "Rock polishing".
- Rock_polishing sameAs m.0d9r87.
- Rock_polishing sameAs Q7354864.
- Rock_polishing sameAs Q7354864.
- Rock_polishing sameAs Rock_polishing.
- Rock_polishing wasDerivedFrom Rock_polishing?oldid=598158155.
- Rock_polishing depiction Snowflake_Obsidian441.jpg.
- Rock_polishing isPrimaryTopicOf Rock_polishing.