But if you can’t score these junkyard treasures, you can make a forge with the materials you have at hand. For this experiment, I used a $5 yard sale Hibachi hamburger grill and some local rocks that I know to be fire safe. Make sure you get your rocks from a dry location and test them in a campfire (while you’re at a distance) to make sure they don’t explode. NEVER use rocks you collected by a waterway (high rate of explosion). As for my forge blower, my daughter’s purple hairdryer works great. It even has variable speeds! I taped it to a pipe that goes into a fitting attached to bottom of the grill. And what does this eyesore burn? I’m using the same fuel that frontier blacksmiths used – hardwood charcoal. Yes, it burns up fast and it won’t get your metal too far past orange heat. However, the price is right, the availability is there, and it burns very clean. It’s clean enough, in fact, to cook my lunch over the dying embers when my work is finished.