SIMPLE technology. A battery draws on metal! Making A CLEAVER From A Saw Blade - Step by Step!

Custom Knife Making: Saw Blade to Masterpiece | Electrochemical Etching & Wood Stabilization Welcome to the Metal and Art channel! In this video, I’ll take you through the entire journey of creating a high-performance custom knife, starting from a vintage circular saw blade. This project isn’t just about knife making; it’s a fusion of heavy-duty metalworking and the fine art of electrochemical etching. I have detailed each of the 19 steps of my process below. 1. Material Selection: The Donor Saw Blade It all started with an old circular saw blade. The high-carbon tool steel used in these blades is famous for its edge retention, making it a classic choice for custom knives. I began by marking the blade profile and cutting out the rough blank. 2. Bevel Grinding & Profiling Since the blade was already factory-hardened, I had to be extremely careful while shaping the profile and grinding the bevels on my 2x72 belt grinder. I focused on establishing the geometry without overheating the steel to avoid ruining the temper. 3. Surface Finishing Before any heat treatment or etching, the blade must be perfectly smooth. I spent a lot of time hand-sanding to remove all the deep scratches left by the coarse grinder belts. 4. Re-Hardening & Tempering This is the moment of truth. To ensure the knife is durable and holds a razor-sharp edge, I performed a full heat treatment. Heating to the critical temperature followed by a fast oil quench transforms the steel into a true cutting tool. 5. Masking for Etching For the electrochemical etching process, I needed to protect the areas of the metal that shouldn't be "eaten" by the electrolyte. I applied a solid coat of paint to act as a chemical-resistant barrier. 6. Transferring the Artwork This is where the art begins. Using tracing paper, I transferred my custom design onto the painted surface of the blade. Then, I carefully hand-scribed the outlines down to the bare metal. 7. Electrochemical Metal Etching Behold the magic of electricity! I used a simple solution of salt and water (electrolyte). By applying a DC current, I initiated electrolysis. The metal in the exposed areas is literally "washed away," leaving a deep, crisp, and permanent relief pattern. It's much safer and faster than using harsh acids. 8. Handle Preparation While the blade was resting, I moved on to the handle. I cut a handle scale blank from a block of wood, shaping it to fit the ergonomics of a human hand. 9. Vacuum Stabilization To make the wood waterproof and virtually indestructible, I placed it in a vacuum chamber filled with a stabilizing resin. The vacuum pulls all the air out of the wood pores, and the resin is forced in under pressure. 10. Curing the Resin After the soak, the handle went into the oven. When heated to 100°C (212°F), the polymer resin inside the wood crystallizes. The result is a hybrid material that is hard as stone with a stunning visual depth. 11. Brass Bolster & Accents To add a touch of elegance and structural integrity, I fabricated the bolster and fittings from solid brass. The gold-like luster of the brass provides a perfect contrast to the dark steel of the blade. 12. Final Assembly (The Glue-Up) The most stressful part: assembly. I joined the blade, brass accents, and stabilized handle using high-strength epoxy. Ensuring perfect alignment is crucial here for a balanced knife. 13. Final Handle Shaping Once the epoxy fully cured, I returned to the grinder to refine the handle’s ergonomics. Now, the knife feels like a natural extension of the hand. 14. Cold Bluing the Blade To give the blade a deep, dark aesthetic and extra corrosion resistance, I applied a cold bluing solution. This really makes the etched design "pop" by adding contrast. 15. Neutralizing & Rinsing After the chemical reaction of the bluing process, I thoroughly rinsed the knife in running water to stop the oxidation process. 16. Revealing the Design I used fine-grit sandpaper to lightly buff the raised portions of the etched pattern. The dark bluing remains in the deep recesses, while the high points shine with polished steel, creating a 3D effect. 17. Final Protection To fully neutralize the bluing chemicals and "lock in" the finish, I applied a specialized oil to the blade. This prevents any future spotting or rust. 18. Wood Finishing I applied a final coat of premium wood oil to the stabilized handle. This reveals the true depth and chatoyancy of the grain we achieved during the vacuum process. 19. Sharpening to a Mirror Edge The finale: sharpening. Starting with diamond stones and finishing with a leather strop. This knife is now both a work of art and a lethal cutting instrument. Enjoyed the build? Hit that LIKE button and subscribe to Metal and Art for more custom builds! Let me know in the comments: have you ever tried electrochemical etching at home?