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Chisel DeWalt DT6979 flat chisel 25 x 300 mm
Flat chisel DeWalt DT6979 with a 25 mm cutting width and 300 mm overall length. Designed for manual and powered hammer use, this flat chisel is intended for removing material, shaping and cleaning joints in masonry, concrete and similar substrates. Robust steel construction and a precision-ground edge provide reliable cutting performance for demolition, renovation and repair tasks where a straight, narrow chisel is required.
The DeWalt DT6979 flat chisel features hardened steel construction for durability and resistance to deformation under repeated impact. Its 25 mm blade width and precision-ground cutting edge deliver consistent material removal and accurate shaping. The 300 mm overall length balances reach and control for both handheld and tool-mounted applications. The design is compatible with common powered hammers and manual striking, offering versatility across different work methods.
Secure the chisel in the appropriate powered hammer or hold it steady for manual striking, ensuring correct seating and alignment. Position the 25 mm cutting edge against the work surface at a shallow angle for controlled material removal or at a steeper angle for more aggressive chipping. Apply consistent strikes with a hammer or follow the powered tool manufacturer's guidance for impact settings. Maintain a firm grip and appropriate body stance to control rebound and prevent slippage during use.
Wear proper personal protective equipment — safety glasses, gloves and hearing protection — and ensure the workpiece is stable. Inspect the chisel regularly for signs of wear, mushrooming or cracks; dress the striking end and regrind the cutting edge as needed. Use the chisel within its intended applications to prolong service life and maintain safe operation.
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