Please choose the correct ending to complete the given sentence: Home and Garden: [header] How to make a metal forge [title] Determine the working range of the metal you are going to forge or weld. [step] Iron is forged in the range 1200 f to 2550 f (650 c-1400 c), brass or bronze at somewhat cooler temperatures. [title] Choose a fuel for your forge.

Ending1: [step] Appropriate fuel is indicated in the first letter of the prtnhora. [title] Measure and mark where you want to use the fuel. Ending2: [step] Propane machines are easier and easier to work with than propane furnaces. Plus, the fuel also makes it easier for the forge to catch the heat. Ending3: [step] Natural gas, propane, or liquefied propane gas are readily available in most locations, but for an authentic, old fashioned forge, coal/coke or charcoal fires would be the first choice. [title] Design the hearth and fire pit to a size suitable for the project you are going to use it for. Ending4: [step] There are several furnace types available but you will need to select the highest-melting fuel possible for your work. When determining fuel, it is often easier to research different materials and decide what your barrel might be suited for.

Answer format: ending1/ending2/ending3/ending4