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Old 06-15-2016, 10:02 PM   #9
jpbsarris
Knows what a fatty is.
 
Join Date: 12-30-12
Location: Linton, Indiana
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You probably have a #61 or #60 orifice if it is listed at 10500 BTU. This can vary some depending on the burner design. I wouldn't go bigger than a #57 or #56 bit. If you go too big you will have issues with the gas pushing the flame off of the holes and being unstable at high setting or not having enough air openings to burn efficiently. You will probably need a pin vice hand drill to use these small bits without breaking them. Use a very light force with the drill so you don't waller it oversize. They are only a few thousands each step. Go one size at a time until you get what you want. It's a whole lot easier to make them bigger than it is to silver solder them in and re-drill them smaller again.
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