Hi,

I am not a jeweller, but I am a musical instrument maker that uses silver soldering. For a little while now I have been having a problem with certain jobs with the silver not melting or fluxing, which can be very frustrating. I use a 'Bullfinch' propane torch. The funny fhing is that I don't recall having always had this problem. Does the torch give less heat as the bottle gets emptier ? Should I be using another make of torch ? I have had this torch for well over 30 years. I have one bigger nozzle that gives more heat but the flame is very big.

I need to solve this problem as the job can become very messy to clean when it has been under the torch for so long just to get the solder to melt and flow.

Thanks for any advice guys !