How to make two types of Parting Tools

Introduction

In this tutorial, you'll learn how to create two types of parting tools—one made from high-speed steel that requires heat treatment, and a simpler version made from a hacksaw blade that is ready to use without additional processing. Whether for woodturning or other projects, these tools can enhance your crafting experience by providing tailored solutions for specific tasks.

Step 1: Creating a Heat-Treated Parting Tool

Materials Needed

• O1 high-speed steel blank
• Map gas torch
• Peanut oil for quenching
• Long-nose vice grips
• Kiln (or homemade furnace)
• Magnet
• Fire safety equipment

Instructions

1. Cut the Steel Blank: Trim the high-speed steel into your desired length and shape for the parting tool.
2. Grind to Shape: Use a bench grinder to refine the shape of the tool, ensuring it's suitable for your projects.
3. Heat Treatment Setup:
   • Prepare your kiln using a mixture of play sand and plaster of Paris for insulation.
   • Heat the steel blank evenly using the map gas torch until it reaches the decalescent point (non-magnetic).
4. Quenching:
   • Quickly immerse the heated tool into peanut oil to harden it.
5. Tempering:
   • Clean the tool to remove any residue.
   • Place it in a conventional oven at 400°F for one hour, then turn off the oven and let it cool down gradually. This process reduces brittleness and increases durability.

Tips

• Monitor the color of the steel as it heats to determine the right temperature; it should be a light cherry red before quenching.
• Always have safety equipment ready when working with heat and flammable materials.

Step 2: Making a Simple Parting Tool from a Hacksaw Blade

Materials Needed

• Industrial hacksaw blade
• Belt sander
• Bench grinder
• Water (for cooling)
• Dust mask and safety glasses

Instructions

1. Prepare the Hacksaw Blade:
   • Use a belt sander to remove the coating from both sides of the blade to prevent binding during cutting.
2. Remove the Teeth:
   • Grind off the teeth of the hacksaw blade using a bench grinder, ensuring the angle is set slightly above horizontal.
3. Shape the Tip:
   • Adjust the grinder to create a curve on the end of the blade. Use water to keep the blade cool during this process.
4. Final Touches:
   • Smooth out any burrs and ensure the edge is sharp for cutting. The tool should be less than a sixteenth inch thick and about an inch and a quarter tall.

Tips

• The high-speed steel of the hacksaw blade does not require additional heat treatment, making this method quicker.
• The built-in handle of the blade makes it convenient and ready to use.

Conclusion

You've now learned how to make two types of parting tools tailored to your woodturning needs. The heat-treated tool offers durability for intricate work, while the hacksaw blade tool provides a quick and efficient solution. Experiment with both methods to see which one best suits your projects, and remember to prioritize safety while working with tools and heat. Happy crafting!