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Special category
Emery Powder / 1 bottle
Emery powder is a very hard rock type used to make abrasive powder. It largely consists of the mineral corundum (aluminium oxide), mixed with other mineral such as the iron-bearing spinels hercynite and magnetite, and also rutile (titania)it used for grinding and polishing (such us : for hand dry sanding and cleaning of metal, wood and pipe ends.)
Sometimes also used for making a pin cushion because it keeps pins and needles sharp and rust free.
Available in various grades.
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