Whether you call it “The Whomper” or “The Thumper,” this powerhouse tool is the ultimate solution for straightening wire and flattening metals with precision. Designed for metalsmiths and jewelers, the Pepetools Spring-Loaded Planishing Hammer effortlessly flattens gold, silver, copper, brass, platinum, palladium, titanium, and more—perfect for use after cutting, sawing, or annealing. Powered by a robust spring, this hammer features a 4-inch (100mm) hardened steel platen, precision-ground after being hardened to 55HRC for exceptional durability. With a simple press of the oversized stainless steel handle, the top platen swiftly meets its perfectly aligned lower counterpart, ensuring a flawlessly straight finish. Unlike other planishing hammers, both the upper and lower platens share the same diameter, giving you increased working space for larger wires and reducing the time needed to achieve the perfect result. Specifications: Dimensions: 19” Tall × 7” Deep × 4.25” Wide Bolt Hole Pattern: 3.5” × 6” rectangle, compatible with screws up to 10mm (3/8”) Weight: 35 lbs Construction: Heavy-duty ductile steel frame (not cast iron) for superior strength and rigidity Platens: Hardened tool steel, surface-ground flat to 55HRC Max Opening: 3.5” (90mm)