About Penrose

Hello there, thanks for checking out my brand. My name is Aaron and I'm a knife designer from Switzerland.

If you're looking for some kind of inspiring backstory, I'm sorry to disappoint. I'm just a guy who's passionate about knives and design, trying his luck at starting a knife brand.

My goal is to create beautiful designs that are ergonomic and functional and to sell high quality knives at a fair price.

Thanks you so much for your support! -Aaron



WARNING: Penrose knives have a sharp cutting edge that may cause serious injury or death if used improperly.

  • Always ensure the blade is fully open and locked before use.
  • Keep fingers and other body parts clear of the blade path when opening, using, or closing the knife.
  • Do not twist, pry, strike, or apply excessive lateral force to the blade, as this may result in blade or lock failure.
  • Inspect the knife before each use. Do not use if damaged, loose, or malfunctioning.
  • Keep securely stored and out of reach of children. This product is not a toy.
  • Maintain a sharp edge; dull blades require excessive force and slip easily. Sharpen with care.
  • Use only for lawful purposes and intended cutting applications.