jeff this is tony bell , not to get into your business , but me and don fogg worked together on forced air forge design , and found out that if you use a small squirel cage blower mounted on the end of a straight pipe , mine is 1/1/4 in. by 12 in. long , then about 6 in. from forge insert 1/4 in. pipe nipple for gas to flow straight into pipe . this one dosen't restrict air flow by making that bend, causes turbulints (however you spell it) and i needed to slip a smaller size short piece in the end of the burner to get it tuned where the blue flame focused right to the end of the burner. you leave the blower blow all it can , and control the fire with volume of gas entering forge turn gas volume up till focus flame. mine will melt steel , probaly close to 2500 degrees. hope this helps