Pepetools - Precision Engineered Professional Equipment

Planishing Hammer, Spring Loaded with Hardened 100mm Platens

Planishing Hammer, Spring Loaded with Hardened 100mm Platens - Main image
$291.85 $449 In stock

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)

Designed for efficiency, built for durability—get ready to “whomp” with confidence!

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Express Shipping · United States: $3.99

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United States · Return window (days after delivery): 30. Return method: By mail. Return postage: Seller pays.

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Customer Reviews (4.8 / 5 · 5 reviews)

Evelyn ★★★★★

The hardened 100mm platens make contact so cleanly that I’ve stopped fighting with warped edges. It flattens my copper wire on the first pass without any bouncing or chatter.

Timothy ★★★★★

My wrists don’t ache after a long session shaping copper, which is a first for me—the spring-loaded action really does the work. The 100mm platens are hardened enough that they haven’t marred from hammering wire flat, and the head’s balance feels natural in hand.

Lily O. ★★★★★

The spring-loaded mechanism makes such a difference—no more wrist fatigue after a long session flattening wire. My pieces come out consistently straight with those hardened 100mm platens, which is exactly what I needed for precision work.