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With free-standing carbide plate. With mallet head. Length 180 mm.
GUILLET chisels are a great advantage when it comes to sharp curves and small marks: the shapes can be traced very precisely without the steel body of the chisel hitting the stone. The carbide is of particular hardness. The chisels are well suited for marble and granite, less so for sandstone.
Lettering chisels or flat chisels can be used to carve lettering and details out of the stone very well, but also to shape edges.
Sculpting tools made of carbide or with carbide inserts are particularly suitable for working hard types of stone. Carbide tools need to be sharpened less frequently during work because the material is so strong that there is less abrasion than with tools made of forged steel. The carbide cutting edge therefore has a longer service life. However, if carbide chisels are ground to a very sharp point or thinly, careful working is required as carbide is a brittle material due to its hardness and can easily break when ground thinly. Levering movements during hammering can also lead to breakage or loosen the carbide pin from the steel casing.
The rule of thumb for hard stone is: the harder the stone, the blunter the cutting angle of the chisel should be. With hard stone such as granite, the chisel is placed at almost a right angle and the stone is virtually pulverised. The chisel therefore has a very blunt cutting edge. For crystalline stone such as hard marble, a more pointed tool with a sharper cutting edge is required. The chisel is set flat so that the stone can chip off without damaging the underlying crystalline structure.
