The NTS 256 universal wet and dry grinder is a professional machine for sharpening, controlled grinding, deburring and polishing cutting tools. It is suitable for chisels, gouges, plane irons, blades, technical knives, hand tools and hard steel tools, including tool steel above 60 HRC. The combination of wet grinding, low speed and variable speed adjustment allows the cutting edge to be processed accurately, avoiding overheating and reducing the risk of altering steel hardness.

The NTS 256 model operates with 230 V power supply and a 0.15 kW motor. Speed is adjustable from 90 to 160 rpm, allowing the operator to adapt wheel rotation to the tool type, material, required material removal and processing phase. Lower speed is useful for delicate and controlled sharpening, while higher adjustment can be selected when greater processing progress is required, while still benefiting from water cooling.

The main grinding wheel measures 250 x 50 mm and is made of high-grade corundum, a material suitable for precise sharpening results even on hard steels. The larger wheel provides a wide and stable working surface, useful for larger tools or operations where regular support must be maintained. Water cooling keeps the temperature low during grinding, preventing edge burning and preserving the mechanical characteristics of the tool.

The 200 x 30 mm leather honing wheel is designed for finishing after sharpening. After grinding, the cutting edge may have small burrs or micro-irregularities; the leather wheel, used with the supplied abrasive paste, allows the edge to be polished, residual burrs to be removed and surface quality to be improved. This operation is important for obtaining a clean, uniform and ready-to-use cutting edge.

The machine is supplied with abrasive paste, an angle gauge for measuring the sharpening angle, universal sharpening support, high-grade corundum wheel K and leather honing wheel. The angle gauge allows the correct angle between tool and wheel to be set precisely, improving repeatability. This is particularly useful when sharpening tools of the same type or when a specific angle must be maintained for consistent cutting performance.

The NTS 256 includes several holding devices for different tools, making correct workpiece positioning easier during grinding. Stable clamping reduces vibration, angle errors and variations in the sharpening angle. This makes it possible to obtain a more uniform edge and more controlled processing, even for operators carrying out repeated sharpening operations or working on tools with different shapes.

The induction motor with variable speed adjustment ensures quiet operation with low vibration. This improves operator comfort and contributes to sharpening quality, because smooth rotation helps keep contact between tool and wheel stable. The motor and switch are protected against water splashes, an important feature for a machine also intended for wet operation.

The powder-coated steel body makes the structure robust and suitable for workshop, laboratory or maintenance department use. The machine dimensions are 460 x 340 x 410 mm and the weight is 14.2 kg, providing stable positioning during operation and good presence on the workbench. The break-resistant water tank contributes to practical use and operational safety during wet sharpening.

The NTS 256 is suitable for wet and dry operation. Wet grinding is recommended when precise sharpening is required, temperature must be controlled and the tool edge must be preserved. Dry operation can be used for finishing, deburring or preparation, always choosing the mode best suited to the tool type and desired result. The possibility of speed adjustment further increases the machine’s versatility.

In woodworking, the NTS 256 is useful for keeping chisels, gouges, plane irons and cutting tools efficient. In workshops and maintenance departments, it can be used to restore hand tools, remove burrs, correct minor edge damage and prepare cutting surfaces. In technical laboratories and vocational schools, it allows controlled work with attention to edge geometry, safety and sharpening repeatability.

For good results, the water tank should be filled correctly, the most suitable speed selected, the angle set with the gauge, the tool clamped securely and light, constant pressure applied. After grinding, polishing on the leather wheel with abrasive paste removes residual burrs and improves edge finish. Regular cleaning of the wheel, water tank and leather honing wheel helps maintain consistent processing quality.

The NTS 256 universal wet and dry grinder is therefore a complete solution for professional tool sharpening and finishing. The combination of 250 x 50 mm grinding wheel, 200 x 30 mm leather wheel, adjustable speed from 90 to 160 rpm, 0.15 kW induction motor, water cooling, powder-coated steel body, holding accessories, angle gauge and splash protection makes it suitable for workshops, woodworking shops, maintenance departments, laboratories and operators requiring precise, stable grinding that preserves the material.