Tooth surface

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On the left the cutting edge is designed as a tooth surface and on the right as a smooth surface
Illustration by Eugène Viollet-le-Duc

The tooth surface is a very old stone-working tool: there are archaeological finds of tooth surfaces both from Greece (Olympia, dated 5th century BC) and from the wreckage of an ancient Roman marble transport ship (dated 1st century). Even today, the tooth surface is still used in the stonemasonry for the rough manual surface treatment of soft stone .

These tools are in the form of double-edged axes with a cutting width of approximately eight centimeters. With the tooth surface, the rough stone surface is leveled or shaped by hammering it, creating tool marks that depict the shape of small rectangles (approx. One to two millimeters wide and up to two to five millimeters long). The tooth surface is made of iron and weighs about two to three kilograms. A handle made of ash up to about 30 centimeters long is inserted into the metal head.

In contrast to the so-called smooth surface, the tooth surface does not have a straight cutting edge, but a cutting edge that is toothed (like a saw blade on a hand wood saw). This is where the term tooth surface comes from.
In the Gothic period there was a special tool that is no longer used today, the tooth pill, a toothed ax with a blade width of about three centimeters.
There are (see illustration) surfaces that can be used both as tooth and smooth surfaces.

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literature

  • Hélène Bernard et al .: L'épave romaine de marbre de Porto Nuovo. In: Journal of Roman Archeology , 1998.
  • Reiner Flassig: Historische Steinverarbeitung , p. 310 ff. In: Bildungszentrum für das Steinmetz- und Bildhauerhandwerk (Ed.), Steinmetzpraxis, The manual for the daily work with natural stone, 2nd revised edition, Ebner Verlag, Ulm 1994. ISBN 3- 87188-138-4 .
  • Karl Friedrich: Stone processing in its development from the 11th to the 18th century . Filser, Augsburg 1932.
  • Wolfgang Müller-Wiener: Greek construction in antiquity . Beck, Munich 1988. ISBN 3-406-32993-4 .
  • Peter Völkle: Work planning and stone processing in the Middle Ages . Ebner Verlag, Ulm 2016. ISBN 978-3-87188-258-6 .

Single receipts

  1. ^ Wolfgang Müller-Wiener: Greek construction in antiquity . Beck, Munich 1988. ISBN 3-406-32993-4 , p. 58.
  2. ↑ Hélène Bernard et al .: L'épave romaine de marbre de Porto Nuovo. In: Journal of Roman Archeology , 1998. pp. 53-81.
  3. ^ Karl Friedrich: The development of stone from the 11th to the 18th century . Filser, Augsburg 1932, p. 36 f.