How to make a multipurpose knife from C75 steel

Please note that knife making can be a complex and potentially hazardous craft, so it's important to follow safety precautions and local laws when engaging in this activity.


Introduction: In this tutorial, we will guide you through the process of making a versatile multipurpose knife using C75 steel. C75 is a popular choice for knife making due to its excellent hardness and edge retention properties. This guide assumes you have some basic knowledge of metalworking and knife making.

Materials and Tools: Before you begin, gather the following materials and tools:



  • C75 steel blank (you can buy this from a reputable supplier)
  • Handle material (e.g., wood, micarta, or G-10)
  • Brass or stainless steel pins
  • Epoxy adhesive
  • Sandpaper (various grits)
  • Blade finish (e.g., satin, mirror, or acid etch)
  • Liner material (optional)



  • Safety goggles and gloves
  • Bench grinder or belt sander
  • Hacksaw or bandsaw
  • Vise
  • Files
  • Drill press
  • Clamps
  • Sanding block
  • Buffing wheel (optional)
  • Sharpening tools (whetstones or sharpening system)



Step-by-Step Instructions:


1. Design the Knife:

  • Sketch the shape and size of your knife on paper.
  • Decide on the type of blade (e.g., drop point, clip point) and handle design.
  • Ensure your design meets legal requirements in your area.

2. Cut the Steel:

  • Using a hacksaw or bandsaw, cut the C75 steel blank according to your design.
  • Leave some extra material for shaping and grinding.

3. Shape the Blade:

  • Secure the steel blank in a vise.
  • Use a bench grinder or belt sander to shape the blade, following your design.
  • Keep the blade cool by frequently dipping it in water to avoid overheating.

4. Bevel the Edge:

  • Create a bevel on both sides of the blade to form the cutting edge.
  • Ensure the bevels are symmetrical and meet at the center of the blade.

5. Heat Treatment:

  • Heat the blade to critical temperature (around 1475°F or 800°C) using a forge or kiln.
  • Quench the blade in oil or water to harden it.
  • Temper the blade by heating it to a lower temperature (around 400-500°F or 200-260°C) to reduce brittleness.

6. Handle Construction:

  • Shape and finish the handle material according to your design.
  • Drill holes for the pins and tang.
  • Use epoxy adhesive to attach the handle scales to the tang.

7. Assembly:

  • Secure the handle scales with clamps and let the epoxy cure.
  • Trim any excess material from the handle.

8. Finishing:

  • Use various grits of sandpaper to refine the blade's shape and smooth out any imperfections.
  • Choose a blade finish (e.g., satin, mirror, or acid etch) and apply it according to your preference.

9. Sharpening:

  • Use sharpening tools (whetstones or a sharpening system) to sharpen the blade to your desired level of sharpness.

10. Final Touches:

  • Buff the blade on a buffing wheel for a polished finish (optional).
  • Clean the knife thoroughly and inspect for any issues.




Congratulations! You've successfully crafted a multipurpose knife from C75 steel. Remember to always handle knives with care, and ensure they comply with local laws and regulations. This tutorial provides a basic overview of the process, and you can further refine your skills through practice and experimentation. Enjoy your new handmade knife!

Should I write more about knife making? If yes, let me know please.

Ohh and by the way You`re also welcome to write some awesome articles here at net-twin.

Kind regards, Andreas :)