judging by the pictures, you lack several elements, easy to fabricate. First, you need a grate, that fits over the hole in the pan in the forge casting. To make that, drill a flat piece of flat steel with a quarter inch drill, drilling many holes in that plate, which should measure about six inches by six inches. When fanned underneath by your blower, the air goes upwards through the grate, fanning your hot coal. Your air delivery system seems complete, just attach the blower and firepot which bolts and attaches via bolts underneath running through the underneath boltholes in the cast iron forge pan. The next step is making the legs for the forge. to do this, just bend pipe legs, and fasten them via bolts threaded through the casting, which holds all the pipe legs in place. All these legs should be bent identically, so that your forge sits level. Your forge is portable, and can be used outside. After you fabricate all the missing parts, come back for the next step, making a cowl and vent pipes to remove the smoke from your forge, should you choose to use it indoors. BTW, your forge is a very good one, and should provide pleasure for decades!