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Version:
Brass
There are knife makers. There are knife makers who are true artists.
And then there’s Stefan Steigerwald.
The “Mad Professor” of the knife world regularly invents folders that make everything else in the knife cosmos look like mere background props. His creations, shaped by retro-futurism and steampunk aesthetics, are fine mechanical masterpieces – complex, playful, and yet somehow perfectly usable for everyday carry.
The Aronax Slipjoint, developed in collaboration with Bastards Knives, is more than just a namesake: Professor Pierre Aronnax was the main character in Jules Verne’s classic 20,000 Leagues Under the Sea – one of the most important steampunk novels ever written. And when you hold the Aronax in your hand, you can almost imagine grim Captain Nemo himself pulling it from his jacket pocket.
You can choose between two fascinating variants:
Brass handle scales with satin-finished D2 blade
Titanium scales with stainless Magnacut blade (ideal for a damp engine room deep under the sea)
The handle scales unmistakably bear Steigerwald’s signature: playful Art Deco elements combined with a clear, almost industrial design. The textured recesses provide a secure grip, while the milled holes in front of the pivot screw evoke an old steam engine – small details with great charm. The proprietary hardware blends seamlessly into the mechanical look – with a particularly clever touch: the pivot lock on the clip side, as if taken straight from a Nautilus construction kit.
The clip itself is a small mechanical revolution. Thanks to an integrated spring underneath, you can press it down like a rocker – no snagging, no scratching, just a smooth slide into your pocket. Sounds simple, but it’s executed so elegantly you almost feel like applauding. The sheepsfoot blade opens with a satisfying walk & talk – a little mechanical ritual in its own right.
The maritime influence of the sheepsfoot blade is no coincidence: the small ramp at the end of the spine gives your thumb a secure rest, while the subtle “horn” toward the tip provides a precise finger rest for detailed cutting work – whether on deck, underwater, or at your desk.
The package includes a microfiber cloth and a sturdy pouch with patch panel.

Version:
Titanium
There are knife makers. There are knife makers who are true artists.
And then there’s Stefan Steigerwald.
The “Mad Professor” of the knife world regularly invents folders that make everything else in the knife cosmos look like mere background props. His creations, shaped by retro-futurism and steampunk aesthetics, are fine mechanical masterpieces – complex, playful, and yet somehow perfectly usable for everyday carry.
The Aronax Slipjoint, developed in collaboration with Bastards Knives, is more than just a namesake: Professor Pierre Aronnax was the main character in Jules Verne’s classic 20,000 Leagues Under the Sea – one of the most important steampunk novels ever written. And when you hold the Aronax in your hand, you can almost imagine grim Captain Nemo himself pulling it from his jacket pocket.
You can choose between two fascinating variants:
Brass handle scales with satin-finished D2 blade
Titanium scales with stainless Magnacut blade (ideal for a damp engine room deep under the sea)
The handle scales unmistakably bear Steigerwald’s signature: playful Art Deco elements combined with a clear, almost industrial design. The textured recesses provide a secure grip, while the milled holes in front of the pivot screw evoke an old steam engine – small details with great charm. The proprietary hardware blends seamlessly into the mechanical look – with a particularly clever touch: the pivot lock on the clip side, as if taken straight from a Nautilus construction kit.
The clip itself is a small mechanical revolution. Thanks to an integrated spring underneath, you can press it down like a rocker – no snagging, no scratching, just a smooth slide into your pocket. Sounds simple, but it’s executed so elegantly you almost feel like applauding. The sheepsfoot blade opens with a satisfying walk & talk – a little mechanical ritual in its own right.
The maritime influence of the sheepsfoot blade is no coincidence: the small ramp at the end of the spine gives your thumb a secure rest, while the subtle “horn” toward the tip provides a precise finger rest for detailed cutting work – whether on deck, underwater, or at your desk.
The package includes a microfiber cloth and a sturdy pouch with patch panel.
Variants from €249.00