F-4 hammer with flame-anodized titanium head and brass ring, standing upright

Zen-Wu F-4 Hammer

Titanium
$159.00 USD
$159.00 USD
Zen-Wu F-4 Hammer

Zen-Wu F-4 Hammer

$159.00 USD
$159.00 USD
Variant

The F-4 is the successor to the classic F-1, our first hammer: a hardened stainless-steel strike face on a titanium body.

The standard body is TC4 titanium with a brass ring set at the seam between face and body. The titanium end carries a slight convexity for kigoroshi (compressing wood fibers so they swell back later to tighten a joint) and other shaping jobs. Titanium transfers more of the swing into the work instead of absorbing it as flex and vibration, and returns far less recoil to the wrist than a steel hammer. The handle is dyed hickory.

The flame-anodized version is burned to a stylized finish: interference colors from a controlled oxide layer, not paint or dye. The brass version, apart from the added weight, has its body hand-textured by chiseling. On both, the open grain of the handle is filled with brass powder.

Strike face: S136 ESR stainless steel, 52-53 HRC.
Head: 2-13/16" long, 1-3/4" across (70.9 × 44.3mm).
Overall length: 11-5/8" (295mm).
Head weight: 16 oz (450g) titanium; 24.5 oz (696g) brass.
Total weight: 20 oz (560g) titanium; 28.5 oz (807g) brass.

Handle care instructions

Pairs with
F-4 hammer with flame-anodized titanium head and brass ring, standing upright
  • F-4 hammer with flame-anodized titanium head and brass ring, standing upright
  • Three F-4 hammers on a maple bench: brushed titanium, hand-carved brass, and flame-anodized heads
  • F-4 hammer in brushed titanium with brass ring at the face seam, curved dyed hickory handle
  • F-4 hammer with hand-carved brass head, bright steel face band, dyed hickory handle
  • Octagonal faceted butt ends of three F-4 dyed hickory handles
  • Two F-4 dyed hickory handles, grain showing through the black
  • Three F-4 heads side by side: flame-anodized titanium, hand-carved brass, brushed titanium with engraved line
  • Zen-Wu F-4 hammers in black gift boxes with gold calligraphy, foam-lined
  • F-4 hammer held at the side, dyed hickory handle in hand
  • F-4 hammer with flame-anodized titanium head and brass ring, standing upright
  • Three F-4 hammers on a maple bench: brushed titanium, hand-carved brass, and flame-anodized heads
  • F-4 hammer in brushed titanium with brass ring at the face seam, curved dyed hickory handle
  • F-4 hammer with hand-carved brass head, bright steel face band, dyed hickory handle
  • Octagonal faceted butt ends of three F-4 dyed hickory handles
  • Two F-4 dyed hickory handles, grain showing through the black
  • Three F-4 heads side by side: flame-anodized titanium, hand-carved brass, brushed titanium with engraved line
  • Zen-Wu F-4 hammers in black gift boxes with gold calligraphy, foam-lined
  • F-4 hammer held at the side, dyed hickory handle in hand

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