Coronel
The Krönel (also Kröndel or Spitzer ) is a stone working tool, the masons for structuring and planarization of surfaces of soft rock use.
Tool use
The tool is made of tool steel and is guided with both hands. The handle has an opening at the top, called the bottle, into which up to 15 double-sided steel tool tips are inserted and clamped with an iron wedge. With the tool tips, unevenness is leveled out by hitting the stone surface and a dotted surface structure is created, which is either further processed by hand or serves as final processing. The crown is mainly used in sandstone processing.
A special feature of this tool comes from Saxony. The Saxons reset every second tool tip , using it to create a special stone surface during surface processing and do not call this technique "crowning", but rather "rasaunern". Furthermore, they also use differently shaped inserts in the so-called bottle that have no tips, but edges. This considerably increases the effectiveness of the surface processing.
According to historical sources, the crown can be traced back to the late 17th century. The Ulm cathedral builder Karl Friederich proves this with stone coats of arms, one of which shows the year 1694.
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literature
- Karl Friederich : Stone processing in its development from the 11th to the 18th century , Reprint 1988, ISBN 3-924756-02-3 .
Individual evidence
- ^ Karl Friederich: Stone processing in its development from the 11th to the 18th century , Reprint 1988, ISBN 3-924756-02-3 , p. 74.