KAPRA carbide claw chisel
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For deliveries to countries other than Germany
the final prices may change in the checkout.
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All prices incl. VAT, plus shipping costs.
For deliveries to countries other than Germany
the final prices may change in the checkout.
MORE INFO
For marble and hard limestone. With mallet head. Length 210 mm.
Unlike many other carbide claw chisels, the teeth of the KAPRA chisels are ground into a continuous carbide plate. This has the advantage that the teeth are particularly sharp. They easily chip off crystalline stone and limestone and enable a precise strike. At the same time, the chisels require careful handling: If carbide chisels are ground to a very sharp or thin point, careful work is required, as carbide is a brittle material due to its hardness and can easily break when ground thinly.
Please observe the special instructions for using the KAPRA carbide claw chisels:
The KAPRA carbide claw chisels are very suitable for smoothing stone surfaces previously worked on with the point chisel. If possible, the claw chisels should be loaded evenly over the entire "row of teeth" and not used on one side, otherwise they may tilt and break. Levering movements during hammering can also lead to breakage. The KAPRA carbide chisels are not suitable for working with a heavy fist or for blasting or coarse removal of stone! The actual shape of the stone should first be worked out with the point chisel.
General information on carbide chisels:
Sculpting chisels 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.
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.
Carbide chisels can also be used for processing sandstone. As sandstone is highly abrasive, forged steel chisels can wear relatively quickly. Carbide cutting edges also have a longer service life here due to their hardness. However, it must be taken into account that the carbide pins are usually set in steel.
As with crystalline stone, pointed chisels tend to be used for working sandstone: The aim with this type of stone is to destroy the bond between the sand particles when striking, for which a pointed tool is better suited than a blunt one. But the same applies here: for very hard sandstone, use less pointed chisels that are less likely to break.
The KAPRA carbide chisels are manufactured by BAVARIA Steinmetzwerkzeuge according to the requirements of bildhau. Find out more about the special features, production and quality of BAVARIA carbide tools in an interview with Andreas Weber, owner of BAVARIA Steinmetzwerkzeuge.