how to build a brake drum forge

How to Build a Brake Drum Forge

Building a brake drum forge can be a rewarding project for blacksmithing enthusiasts and hobbyists alike. A brake drum forge is an efficient, low-cost furnace that can reach high temperatures, making it ideal for forging metal. This guide will take you step-by-step through the process of creating your own brake drum forge.

Materials Needed

Before you begin, gather the necessary materials

1. Brake Drum Obtain a used or new brake drum from an auto parts store or scrapyard. A diameter of about 12 to 14 inches is ideal. 2. Steel Pipe A 2-inch diameter steel pipe will serve as your air supply. Cut it to a length of about 12 inches. 3. Blower A hand-held hairdryer or a small electric blower works well to supply air to the forge. 4. Fire Bricks These are essential for lining the inside of your forge to help retain heat. 5. Refractory Cement This will coat the interior of the forge to protect the brake drum from damage and to further assist in heat retention. 6. Steel Plate A piece of thick steel to act as a base for the brake drum. 7. Miscellaneous Tools You'll need tools such as a drill, angle grinder, welding equipment, safety gear (gloves, goggles), and measuring tape.

Step-by-Step Instructions

Step 1 Prepare the Brake Drum

Start by cleaning the brake drum thoroughly to remove any dirt, grease, or rust. This will ensure that the forge functions properly and that the material can withstand high temperatures.

Step 2 Create the Air Supply

Drill a hole in the side of the brake drum about 2 inches from the bottom. This hole will accommodate the steel pipe that will deliver air into the forge. Insert the steel pipe into the hole at a downward angle to help direct the air flow. Ensure a snug fit to avoid any leaks, and weld or seal it if necessary.

Step 3 Build the Forge Base

Using a thick steel plate, create a stable base for your brake drum forge. The base should be slightly larger than the drum itself to provide stability. Attach the brake drum securely to the base using bolts or welding for a secure fit.

Step 4 Line the Forge with Fire Bricks

Lay fire bricks on the inside of the brake drum to insulate it and help retain heat. Make sure the bricks are tightly fitted together. This step is crucial as it will minimize heat loss and protect the brake drum from extreme temperatures.

Step 5 Apply Refractory Cement

After lining with fire bricks, apply refractory cement to the interior surface of the forge. This adds an extra layer of heat resistance and protects the bricks from damage during use. Allow the cement to dry fully according to the manufacturer’s instructions.

Step 6 Set Up the Blower

Attach your blower to the end of the steel pipe extending from the drum. Make sure it fits snugly so that no air escapes. The blower will deliver a steady stream of air into the forge, increasing the temperature significantly.

Step 7 Test Your Forge

Once everything is assembled, it’s time to test your forge. Gather a few pieces of scrap metal and turn on the blower. Light some charcoal or use propane as fuel to start your fire. Monitor the temperature and make sure it reaches the desired level to forge metal.

Safety Precautions

Always practice safety when working with a forge. Wear protective gear, including gloves, goggles, and a fire-retardant apron. Work in a well-ventilated area and have a fire extinguisher nearby in case of emergencies.

Conclusion

Building a brake drum forge is a straightforward project that can significantly enhance your blacksmithing experience. With the right materials and attention to detail, you'll create a reliable forge that enables you to transform metal with ease. Once completed, you’ll be ready to start forging your custom creations. Enjoy the process and happy forging!