Polishing Stones
made from
Agate
A polishing stone is a tool for smoothing other, less hard materials. Polishing stones are usually made of agate or hematite and have a very smooth, but matt- ground surface that is used to rub over the material to be polished. This compresses and smoothes it to such an extent that itself takes on the shine. Polishing stones have a rounded shape and are often attached to a handle or shaft to make them easier to work with. They are available in numerous, often individual versions. They are mainly used by gilders to polish gold leaf to a high gloss with poliment gilding. The very sensitive stone also becomes glossy when used for a long time and has to be sanded again.

In contrast to polishing with polishing pastes and powders, which polishes through abrasion, rubbing with the polishing stone means that almost no material is lost. Polishing stones are therefore used, among other things, for processing objects made of precious metal, but also for rubbing gold leaf and polishing stucco marble or gold ink. A related tool is the polishing steel.

Source: https://de.wikipedia.org/wiki/Polierstein • Translated by the Google Translator


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